Can't you read the title? It's about naming your items while being original; and with the internet these days, originality is scarce.
So what seperates original item names from mass-copied item names?
... Oh come on, is it really that hard to figure out?

Oh look, the title can be used as it's own item name, oh wait, i've already done it.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1944836142
So here's what the general gist is, i'm going to show you some of the MOST UNORIGINAL item names there are, and teach you how to give your item an original name.
Let's get started, shall we?

When i see these, i just think "Wow, did that guy just waste a name tag to name his item that bad?"
These item names are either unoriginal or mass-copied. If you name your item like this, you should be ashamed.
Good news! Someone made a blog all about ♥♥♥♥♥♥ names! My job is finished![♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥.tumblr.com]
SCOUT: SCATTERGUNS
"Meatshotter"
"Fox News" (Applies to all innacurate Weapons)
SCOUT: PISTOLS
"The Wiener" (Applies to Winger)
Anything regarding fap (Applies to mad milk)
SCOUT: MELEE
"BONK"
SOLDIER: ROCKET LAUNCHERS
"Crocket Launcher"
"Rocket Lawnchair"
"Penis" And "The Penetrator" (Applies to the quoteunquote "Original")
"CRITRAWCKETS"
"Airshotter"
SOLDIER: SHOTGUNS
"Fox News"
"Kurt Cobain's Microphone"
"Plan B"
"*Insert name*/My Boomstick"
SOLDIER: MELEE
Anything sexually regarding abuse (Applies to disciplinary action)
"Butt Paddler"
PYRO: FLAMETHROWERS
"W+M1"
"Mmmph"
Any Fire-type pokemon (The charmander family especially.)
PYRO: SHOTGUNS
"Fox News"
"Kurt Cobain's Microphone"
"Boomstick"
DEMO: GLAUNCHERS
"Pill Launcher"
DEMO: STICKY LAUNCHERS
Can't think of any.
DEMO: MELEE
"Bomb on a stick" (Applies to caber)
HEAVY: MINIGUNS
"Sasha"
"Mow Down"
"The Not-so Mini gun"
HEAVY: SHOTGUNS
"Fox News"
"Kurt Cobain's Microphone"
"Plan B"
"Boomstick"
HEAVY: MELEE
" Deck Beaters"
"Boxing"
ENGIE: SHOTGUNS
"Fox News"
"Kurt Cobain's Microphone"
"Plan B"
"Boomstick"
ENGIE: PISTOLS
Can't think of it.
ENGIE: WRENCHES
None i can think of
MEDIC: SYRINGE GUNS
Can't think of any
MEDIC: MEDIGUNS
"Ze Ubermench"
"Adolf Kritler" Applies to Kritzkrieg
MEDIC: BONESAWS
"SAW THROUGH YOUR BONES"
SNIPER: RIFLES
Home to some of the mass-used names
"Aimbot.exe" (Or anything to do with aimbots)
"360NOSCOPE" (Or any other CoD Sniper parody)
Lucksman/♥♥♥♥♥♥♥♥ (Or anything else to do with the Huntsman)
Probably alot more, can't think of them.
SNIPER: SECONDARY
"Old Piss" (Applies to vintage Jarate)
"Piss" (Applies to regular jarate)
SNIPER: MELEE
Can't think of much.
SPY: REVOLVER
"In case of razorbacks"
SPY: SAPPER
"The Unbuilder"
SPY: KNIFE
"The YER" (Applies to Your eternal reward)
"There's a Bug on your Back."
Anything to do with Call of duty knives.
SPY: INVISIWATCH
"Now you see me..."
"I'm the invisible man"
OTHER SUCH THINGS
NO BRONY NAMES. I MEAN THIS. IT MAY BE A BIAS BUT BRONY NAMES ARE NEVER ORIGINAL. NEVER.
"______'s Own (Weapon)" Applies to any stranges.
"Oh Sorry, i didn't mean to Airshot/Headshot/Whatever you."
"If you are reading this, you are dead."
"Drying Pan"/Brock's Drying Pan"/Any other thing related to that pokemon episode
If i missed any, go ahead and post a comment.

Now that we're done with all those bad names, we finally get to find an item name for you! just don't name any of your items those.
You might want to name your item with a reference, this can be done well, unless it's mass used (E.G. "My Boomstick")
Here are some of my examples, Try to spot the reference! Answer in the black.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1445744899 (Reference to Dark Cloud)
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1808042954 (Reference to Monty Python)
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1077577700 (Reference to Final Fantasy)
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1646826207 (Reference to Skyrim)
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1657373143 (Reference to Glory of Heracles)
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1173293290 (Reference to 8-Bit Theatre)

Make sure that it's something that people will recognize, you don't HAVE to, but i suggest it.

I can't tell you what to do for this, this is up to your imagination and that alone.
But if you are interested in some examples, here are a few.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1944836142
Note that this name is a pun, derived from the item itself, resembling a general's uniform.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1799827583
This is a reference to the Legendary shield of the same name.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1593261733
Note that an "Anti-Air Cannon" is used to shoot aircraft out of the air, and this shotgun does the same to players.
As for other names? That's up to you, and i wish you good luck

When you give your item an unoriginal name, congratulations! You've wasted a nametag. No one will laugh at it, no one will say "Great Name!" They'll just sit there and silently judge you.
But when you give it an original and funny name? People will be amused, they might even say "Great Name!"
Also, another tip, when naming an item do so in a server, ask before you name, and watch everyone's reactions.
Thanks, and good luck naming.

I'd like to say right now, thank you for all the views, and favorites and likes and comments.
However, no thank you to all the trolls and flamers who i've had to prove wrong.
Such as the ones who assume i wrote this solely to gloat about my names and shoot down yours, so, as an added bonus, here are some of my less-good names.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_679072138
The only reason i haven't un-named this item is that it was the first item i've ever named... with a nametag i got dropped, AS A F2P. It's a terrible name, i don't know why i've named it and even i don't see how it's funny.
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1647024176
This is also a reference to Dark Cloud, it was my favorite sword name... but then i looked at the original model for the sword and... it was ugly. proof: http://darkcloud.wikia.com/wiki/7th_Heaven
https://steamhost.cn/steamcommunity_com/id/NeroLimeGuy/inventory/#440_2_1808042954
Yeah i know, this is in the references section, but looking back i see that it's overused on many things. I am sorry for this.
So there, that's my shame in all of this, now your flame comments are outdated.