keep it in (one's) pants
(redirected from keeps it in her pants)keep it in (one's) pants
vulgar slang To refrain from having sex with someone. "It" refers to the penis. Keep it in your pants, will ya? She's cute, sure, but she's also my best friend. Don't worry, he kept it in his pants—nothing happened beyond a little kissing.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.