Just after you cum, and you start the clean up. Then you hear the family vehicle pull into the garage. Immediately you go into Defcon-M, which is the state of panic you're in..
Guy 1: Last night i just finished masturbating and my parents got home..
Guy 2: What did you do?
Guy 1: I went into Defcon-M, obviously!
When 2 nerdy parents have kids, thus making them nerds, genetically speaking.
Guy1: my parents both have PH. Ds!
Guy2: HA! you're genetic nerd! trollface