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1.
1) An idiot, a stupid person.

2) A scrotum sack that has seen too much masturbation.
1) STFU, whackbag.

2) Dude, lay off the pr0n. Your whackbag is about to fall off.

Words related to whackbag

pr0n stfu
 
2.
the art of walking past one of your boys and giving him the little "love tap" back hand to his privates for sport.
Corey didn't expect the whack bag I layed on him in the line at Subway.
by Rus from providence RI January 27, 2004
 
3.
A hard strike to ones genitals, Usually done with closed fist, or foot.
" All I did was poke her sisters tit and she freakin Whack Bagged me in the giggle berries!"
by Jimi November 23, 2004