Shag Dodger

A person who avoids their obligations in the bedroom (or any other place where sex can be expected to happen)..

Drex was most put out at the expectation that he should shaft Big Lady after she had made him another fine meal..

All he really wanted to do was go to sleep, but the thought of her labelling him a "Shag Dodger" in the morning was too depressing to contemplate so he reluctantly Rogered her brains out several times..