After sex, what's the best thing to do?

Elli
Ladies, hi!!  We're a mid-30s couple TTC for about 3 months now. 
I'm wondering... what do you do after sex?? Let the spermies hang inside for a bit, and then drop them off at the pool (toilet)? Go to sleep with them inside? Wipe? I've heard superstitions that you should prop your legs/butt up to help the flow, but medical stats don't seem to support the efficacy of that 
It sounds like a silly question, but this inquiring mind wants to know!!  Pls do share :)