Literally what you think it is. The laws of physics when it comes to sex.
Basically, there are 3 laws that have been developed by T.A.P (don't worry about full form)
Law #1: You do you (no, don't ef yourself, just be you)
Law #2: Go with the flow (let things happen as they're happening)
Law #3: In the moment (literally. just be in the moment. don't get so caught up in your head)
Is this necessary. Like. C'mon now. Really?
It's the Laws of PhysSex