Shaking the bag 

Verb: The act of fondling,playing, or squeezing a sack and or bag that could be resembled as male genitalia.

"Bruh, did you take that girl home from the bar last night? "

"Ya,she was really good at shaking the bag."

Shaking the bag by DrunkenPeach February 7, 2017

sharing the bag

1. When two people in a sexual relationship are ready to move beyond vanilla sex.

2. Improving one's friendship with a roommate or classmate to the point where you both are comfortable helping each other carry a bag, for example, one person holds each handle.

I don't know how Tim feels, but I think I'm ready to start sharing the bag.

sharing the bag by yankeesfan1989 December 5, 2013