Two guys were standing next to one another at a urinal and one looks over at the other and says, "Excuse me, but didn't you use to live in St. Louis?"
"Why yes I did," the other man answered back. "How did you know that?"
"Well I used to live in St. Louis as well. And didn't you live on the east side?"
"Yes, I was from the east side," the man answered back. "How did you know this?"
"I belonged to the Jewish congregation there. Weren't you a member too?"
"Why yes, I was," the man replied. "How would you know this?"
"Didn't rabbi Horowitz perform your circumcision?
"Yes, I think he did. But how would you know this?"
"Well," answered the first man, "You're peeing on my leg."