jack into the Matrix 

Sexual intercourse.

Guy 1: So did you hook up with Beth?

Guy 2: Hell, yeah, we made out then she let me jack into the Matrix.

jack into the Matrix by Led Zeppole November 3, 2003

jack into the matrix 

1. to get so stoned as to feel that you are a part of something much larger (as in the movie "the Matrix") than yourself.

2. to get really fucking high on weed or hash

"Hey Billy, wanna catch a movie?"

"No thanks Logan, I thinK I'm gonna go home and jack into the matrix and eat Pringles."

jack into the matrix by Sigsnake January 17, 2010