slip it to
Upper Intermediate (B2)informal
To give something to someone without other people seeing or knowing
"She slipped the answer sheet to her friend just before the teacher turned around."
Hear it in context

Willis, Bowman, Brooks, & Smith 49ers LB Corps Highlights! (2011-13)
NFL Throwback · 40:10
And Brady will slip it to the outside and IT'S PICKED OFF AGAIN.

He Had Money, Power and Everything… Except the Woman He Truly Loved | Romantic Comedy
CineSpace · 41:14
And she goes if she applied I'd slip it to the top of the pile.