Ingesting a powdered substance, usually a crushed up pill, by wrapping it in some toilet paper and swallowing it.
Man, I just parachuted that E pill, it's gunna hit me alot faster.
A really bad basketball player.
Also, just a plain old idiot, any one who just throws anything in the air and hopes it makes a goal.
Origin is George Castanza of Sienfeld.
He is the original chucker
Jason is a real chucker, he just makes shit up and hopes we all believe it.