A) Having sex with someone, heading out, and then coming back within hours of leaving. This usually involves significant others or friends with benefits, but for greater effect, strangers.
Person A: Hey, I just got back from the gym.
Person B: You're such a liar, you stink of sex and rubber.
Person A: Haha, how'd you know? :phone call: Well, hey I have to jet.
Person B: You going to double tap tonight aren't you?