Three Thirsty Strings

Three strings walk into a bar. They sit down and realize after a few minutes they aren't being waited on. The first string walks up to the bar and asks for three beers. The bartender responds, "I'm sorry buddy we don't serve strings in here." The string, taken aback, walks back to the table and and tells his buddies what the bartender said.

"I've been here before and gotten a drink, I'll go get us something," said the second string. The second sting walks up to the bar and politely asks the bartender for three beers. The bartender replies, "I thought I told your buddy we don't serve strings in here." So the second string walks back and and tells his friends what has happened.

The third string says, "Oh, I come in here all the time, I know how to order a drink." The third string walks into the bathroom where he ties himself up and muffs up his end. Then, he walks out to the bar and asks the bartender for three beers. The bartender gives him a weird look and says, "You a string?" "Frayed knot," he replies.