When a person is feeling "randy" and is better than hogging, but not above the fuglies and has a bag handy.
Step-by-Step: 1. Place bag over ugo's head. 2. bang ugo.
Jon: I'm going to cut you from work and add on Kristal.
Tina: maybe you should, and then you can bag bang after
Jon: bag bang?
Tina: yes bag over her head whilst banging
Jon: I like it