look up any word, like the eiffel tower:
 
2.
Something that Justin Beiber has yet to experience.
Amber: I love this song!

Amanda: Yeah, this girl has a really great voice.

Amber: That's Justin Beiber.

Amanda: Well maybe one day when his balls drop, nobody will make that mistake.
by advaschechel March 17, 2010
 
1.
To reach puberty for a boy.
God, I wish that kid's balls would drop so we didn't have to hear him screeching all the time.
by Plush Terry October 28, 2004