fingers trippin
The word "fingers trippin" means that when you and your girlfriend are somewhere private and you are having a sexual moment in your own time and all you have to do is simply start fingering the girl that you are next to. fingers trippin means that your fingers are trippin over the girls legs
guy: hey babe i'm feeling kind of horny right now.
girl:oky what do you want to do?
guy:oops my fingers trippin over your leg babe.
girl:oh okay
girl:oky what do you want to do?
guy:oops my fingers trippin over your leg babe.
girl:oh okay