Earlier in the week, at work, I found a Despicable Me fart gun on self checks someone left behind. Of course, I work with adult women with the mentality of 14 y/o boys so we had some incredible fun with it.
Our CSM took it down to a register by her podium, hid it from the cashier there and squeezed the trigger. This particular cashier is not know for her quiet subtleties and we hear her basically holler CRUD MONKEYS!, Tammy, and after that we were laughing to hard to hear the rest. CSM also took and squeezed the trigger into the intercom going into our accounting office.
Not gross, per say, but farts are funny.