Similar to the act of
paper bagging. However, because the person being bagged cannot breath under
the plastic bag opposed to the paper bag, he/she will
suffocate as a result. The term is used to describe someone that is so ugly that you would have to kill them after intercourse.
Adam: Charlies' girlfriend is a real
minger, he ought to be Plastic Bagging that bitch.
Bart: I think you mean
paper bagging?
Adam: I don't think you understand just how ugly she is.