balls drop 

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.

balls drop by Plush Terry October 28, 2004

Balls Drop 

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.

Balls Drop by advaschechel March 17, 2010

Balls Drop 

When a boy reaches puberty. During puberty, the penis grows larger and longer, and the testicles enlarge and grow hair. Before puberty, a boy's scrotum will be on the penis. During his puberty, the boys scrotum will enlarge and hang off his body more.

"Hey, has Mitchell balls dropped yet?"
"No, he ha not hot puberty yet and his balls are still close to his willy

Balls Drop by The_real_Mitchie March 19, 2017

Balls drop 

(Bales-droped) puberty

My balls dropped and now I sound like a phedophile.

Balls drop by Jimmynono December 24, 2018

Balls Drop 

Metaphor telling someone to "man up" or to act like an adult

Brandon, you need to let your balls drop and take care of your responsibilities

Balls Drop by Proxy-J December 1, 2019

Balls drop 

totally not means puberty but instead means becoming infertile

"dude, your balls dropped after Vanessa left you Danny"

Balls drop by michael bernay May 17, 2022

When Justin Bieber's balls drop 

A way of saying "yeah right" or trying to say something's never going to happen because it sounds so rediculous. Synonomous to "when hell freezes over"

Derek: "Hey Dan can i borrow your car tonight?"
Dan: "No"
Derek: "Come on dude please. Won't you ever trust me."
Dan: "Hell no. I'll trust you when Justin Bieber's balls drop."

When Justin Bieber's balls drop by ishakeimove May 8, 2010