get into someone's pants

get in(to) (one's) pants

vulgar slang To have sex with one. (Usually said of the intention or expectation.) I've stopped going to the clubs around town. They're just filled guys trying to get into your pants.
See also: get, pant
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

get in(to) someone’s pants

in. to manage to copulate with a certain female; to seduce a female. (Usually objectionable.) Are you sure you don’t just want to get into my pants?
See also: get, pant
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.