2.Kids version of a drive by.
3.Most painful game ever. Played with bricks and metal baseball bats.
(10 minutes later)
I'M already out, and who keeps hitting my crotch!!!
2.DUDE WTF!! WHY ARE YOU GUYS THROWING !@#$%& PINEAPPLES AT ME!!!!
3.Only fun when you get to throw.
And yep you've guessed it right about the meaning's origin. Dodging the guy's balls.