Noisy neighbor
When a male, staying in a hotel room with joined doors, opens his end and begins to masturbate so close to the other door that his hand bumps it with every stroke. When the curious occupant in the next room opens their door, the masturbating male ejaculates on the foot of the neighbor.
When I was on business in Tucson, I got banned from the hotel for pulling a noisy neighbor on the old lady in the next room.