lucy24 - 12:37 am on Jan 29, 2012 (gmt 0)

As long as we're walking into bars...

Three logicians walk into a bar. Bartender says "Do you all want a beer?"
First logician says, "I don't know."
Second logician says, "I don't know."
Third logician says, "Yes."

I did not get this right away, but I got it in the end.

Idle query: Does there exist any professional group whose jokes make normal people laugh?