Three guys are drinking in a bar when a drunk comes in, staggers up to them, and points at the guy in the middle. "Your mom is the best lay in town." Everyone expects a fight, but the guy ignores him, and the drunk wanders off. Ten minutes later the drunk comes back and points at the same guy. "I just screwed your mom, and it was swee-e-e-t, dude!" Again the guy refuses to take the bait, and the drunk wanders off. Ten minutes later he comes back again. "Your mom even let me..." Finally the guy interrupts: "Go home dad. You're drunk!"