馃槅 that reminded me of a story my father-in-told me once . when he was in the coast guard he and some buddies where doing the same thing to fight boredom...
well somehow , never heard of this before , his friend who was in position went fart and instead his butt sucked in air instead of blowing out air... 馃槚
well you can imagine what came next.....he didnt do that anymore 馃槈