A pig walks into a bar and orders a beer. After drinking it, he hops off the bar stool, pees on the floor and leaves.
Another pig comes in, drinks his beer, pees on the floor and leaves.
A third and forth piggy come in and do the same exact thing.
Finally, a fifth piggy comes in to the bar and orders a beer. After finishing his beer, he gets off the bar stool and begins to walk out the door.
Before reaching the door, the bartender yells - "Hey Pig...aren't you going to pee on the floor like the others?"
To which the pig replies - "No you idiot! Everyone knows that the last little piggy goes WEE WEE WEE - all the way home!"