Definitions by Chantelleee.

Shag 'n' Bags 

When you shag someone, and never speak to them again (bag them, like bin them).

Boy 1: So you and Sarah have fun last night
Boy 2: Oh yeah, she was great!
Boy 1: You seeing her again soon?
Boy 2: Nah mate. Just that one night.
Boy 1: Oh ayee, the old Shag 'n' Bags. Nice one.

Shag 'n' Bags by Chantelleee. March 31, 2011