3 guys walk into a bar

[Borg warner]

Three guys had just walked into a bar and ordered a round of drinks when a drunk comes in, staggers up to them, and points at the guy in the middle, shouting, "I just had sex with your Mother!"

Everyone expects a fight, but the guy ignores him, and the drunk leaves the bar, 

A half hour later, the same drunk comes back, points at the same guy, and says, "I just did your mom again, and it was sw-e-et!"

Again the guy refuses to take the bait, and the drunk goes back to the far end of the bar.

Ten minutes later, he comes back and announces, "Your mom liked it and was begging for more!"

Finally the guy explodes and screams, "Go home, Dad, you're drunk!!!"