You know something is really miserable...

Makes me wonder what would cause such a desire to have that happen to ones self.

Would stepping one some Caltrops be the next step of such a horrible mindset?

Right about the point where you've dealt with teammates who can't stop flaming each other, tossing out various mental illnesses as insults and doing everything but playing the game.

Short answer, anything you know you have to deal with that's incredibly stupid.

There's a shortcut somewhere that involves crossing the river by swimming because you didn't get far enough downstream to see there was a bridge to jump off of.