make it with somebody
make it with (someone)
slang To engage in sexual activity, especially intercourse, with someone. Primarily heard in US. I heard Tommy's brother's friend made it with her when they were in summer camp! To be honest, you're the only person I've ever made it with.
See also: make
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
ˈmake it with somebody(American English, slang) have sex with somebody
Farlex Partner Idioms Dictionary © Farlex 2017