My wife was angry. She said: "It's unfair! A guy can screw a different girl every week and he's considered a stud. But if a girl screws even two guys in a year she's called a slut."
So I man-splained it to her: "Think of it this way. If a key opens lots of locks it's a master key. But if a lock is opened by lots of keys... well... it's a shitty lock."
Wife asks her spouse: "What are you doing?" Her husband says: "Nothing." So she presses him: "Nothing...? You've been reading our marriage certificate for the last hour."
He tells her: "Well... yeah... I was looking for the expiration date."