air blasters repelling rockets but not arrows
arrows that can stick you to a wall
double jumping in mid air
no one ever has to stop for a bathroom break.
GO!
Alright, these are a bit more challenging...let's try.
Air blasting rockets over arrows: Ever throw an unfolded piece of loose leaf paper at someone? What if they tried to blow it away? It'd just go every which way because of the unpredictable air resistance on the sheet, and because it is too light to carry much momentum to overcome that resistance. Now, imagine rolling a pencil across the desk to someone who blew on it. The pencil would roll back, because of less air resistance and more momentum. The same is true with with the arrow and the rocket. The arrow is so light and has those neat little animal-feather wings propelling it in one direction, it can't be dissuaded at the last second like a heavy ol' rocket can. Take it from me, I took a physics class once, this stuff all checks out.
Arrows that stick you to a wall: This is what we in physics call the Bulletin Board principle. You use thumbtacks, or what we physicians..er..physicites..physicsologists...physics people call "push pins." You hang up little scraps of paper, reminders, centerfolds, what have you. But, with an arrow, you can "bulletin board" much more, like a whole person! Bigger pin, bigger bulletin, and this bulletin says "Watch out mate, there's an arrow comin' for ya' head!"
Double jumping in midair: Hey, there are plenty of double jumps in real life.
[ame]http://www.youtube.com/watch?v=A6Tub5_NXOA[/ame]
Okay, that's double dutch, but there's a hell of a lot of jumping and other cool crap going on there, I'll give them a pass. How about this:
[ame]http://www.youtube.com/watch?v=bKGAg2g6YEk[/ame]
See that? A clunky slow robot can double jump! And get made a king for it! So certainly our lowly, yet incredibly fast, little scout can do the same thing.
Never stopping to pee: Why would you have to? Every .5-5 minutes you and your bladder are gibbed into a million little pieces, voila, empty bladder, colon, stomach, you name it, it's pretty much just been emptied across the wall, the floor, your killer, and any other surface that happens to be near. Really, Jarate is only the next step in excrement propulsion in TF2, really it's been there for a long time.