Well, I just found out that shag is slang for the stuff in Britain. This normally wouldn't be significant except for I've got a person who is from South Carolina (aka prime time shag country) in a RP with a character from Britain. And the person from SC has a potential boyfriend. So I can totally see she and the british person at lunch with their friends and this conversation occurring:

Mandy: So how's it going with Dylan?
Sloane: Oh it's going pretty well. We've been out a few times. He's really nice and always up for trying new things! He even insisted I teach him how to shag.
Leonard: *spits out obligatory British tea* S-SLOANE BLOODY H***
*everyone just sort of stares at Leo*
Sloane: I-It's a dance, Leo.