(ex) RAF = 1, (ex) USAF = 0
Scene: Shared house of aircraft engineers.
We invited an American contractor (J***) over for a few beers in a Midlands town and gave him some floor space in the lounge to get his head down later. When we returned after a skinful of grog, we stuck on a blue-tinted video for some late night entertainment. J*** fell asleep after half an hour, to which we put a copy of an adult magazine next to him with the centre page open. Then a wad of toilet paper soaked in milk.
The following morning when we got up, the magazine was tidy on the table, the sodden toilet paper had disappeared to hide the 'evidence' and J*** was looking a bit uncomfortable. To this day he doesn't know the truth. (I still have an incriminating photo of the set-up).