Never heard of a barrel scoot? Well neither did i until i watched this video.
Basically, a barrel scoot is a scout that hides in a barrel by shooting it with his pistol, you actually can do this with most classes, but you have to hit the barrel with only one bullet (does not work with a sniper rifle), or else you will break the barrel, but after getting inside the barrel you can see outside of it, and all you have to do is wait for prey and shoot the barrel with any scattergun, bat or another few shots from a pistol.
NOTE: doing this does NOT make you invulnerable, and if the barrel is broken just hope to the best of your abilities you can dodge everything the enemy throws at you.

This is just the plain stupidest idea in the game.
That's right, running around with a weapon that deals less than 10 damage (it does induce mini crits on the last player hit, yet still doesn't deal more than 10 damage with the weapon) I'm talking about running around with a Fan o' War and actually trying to kill people with it. This technique is not about getting kills, but about being an absolute idiot and annoying the hell out of one player at a time.
NOTE: Wear gibus and peeroe vision goggles with this, makes ya look liek a nubsta.

Yep, a loadout that makes you look and seem like a noob.
Just don yourself with 3 weapons that are a terrible combination:

• Rocket Jumper
  
• B.A.S.E. Jumper
  
• Equalizer

Similar to the last loadout for scout, this one causes as little of damage as possible for your soldier.
I don't have much to say about this one, but just have a try. If your on a valve server you'll fit right in.

Yea, if you've played TF2 enough-- well, any hightower game, you will have probably at least seen this. A trolldier is a soldier with:

• Rocket Jumper
  
• Mantreads/ B.A.S.E. Jumper
  
• Market Gardener

This kind of soldier is well known on high skybox maps like hightower and their main, primary and only objective is to smash your skull with their mantreads or market gardener.

Pyro shark (or as i like to call it, peeroe shark) Is a water hazard that aren't often seen, but are real.
All you need for this is a Neon Annihilator and a body of water, even if it doesn't even go up to your knees. There aren't that many of these creatures around nowadays, but even you can be a pyro shark. I suggest doing this on ctf_2fort or ctf_sawmill (go down to the intelligence, that area works and you can remove sappers from sentries).
NOTE: The crits also work with mad milk and jarate, but not in just rain.

You KNOW what class this is, and you probably know what i'm talking about.
A Drunken Demoknight is what i'm talkin' about. For this one, all you need is any sheild and a bottle (i suggest using a scottish handshake).
Step 1: Take a swig
Step 2: Charge at target enemy
Step 3: Crash into them and hit them as hard as you can
Step 4: Talk drunken gibberish.

Fat Scout, and no, this is not a third scout.
Most players think to be a fat scout, all they need is a shotgun out at all times... WRONG!
To be a real fat scout, you need 3 weapons:

• Tomislav (Because its like a pistol with no reload and has a spin-up)
  
• Shotgun
  
• Eviction Notice (Because it acts very similar to a bat)

Why is this a thing? Why would you play this?
The answer to both of those questions: 'CAUSE ITS FUN!!

Yea, i made one for the class i HATE. But anyways.
This loadout is just to confuse and/or scare enemy engineers, most often noobs.
What you need:

• A Disguise (Scout or Heavy is best, but you can do any class apart from the Pyro)
  
• Cloak and Dagger

All you need to do is cloak yourself near a sentry nest with at least 1 engineer, have a disguise on of a player on your team and start saying "Dispencer here" (press X then 5).
NOTE: During the TF2 Birthday mode, you can use the noise maker and weird them out even more, and if you have a halloween noise maker (best to have the banshee) this will scare the crap out of 'em
*insert the video i found this on here*

A little war has begun...
The Shotty Soldier VS The SMG Sniper
and unlike what i said about the fat scout, you only need the secondaries this time, but you can use melees.
JOIN THE BATTLE TODAY.