Heres this one for starters, wrote it out of boredom a while ago.

The Scout:

I can run at breakneck speed.
and stun you with a ball.

Then throw some milk at your feet.
And chuckle as you fall.

Rockets and bullets whiz and fly,
but none of them will hit.

Just turn and run dummy, or you'll die,
I'm the scout here, dont you get it?!