A student brings a girl he picked up back to his flat and, after going through the house, the girl notices a giant gong and a mallet. She asks him what it’s for and he replies, “It’s a talking clock.”
She’s amazed and asks him how it works, so the student proceeds to pick up the mallet and hit the gong as hard as he can.
The two stand there for a moment, before a voice from the other side of the wall screams, “What are you fuскing playing at, it’s three fifteen in the fuскing morning!”