There's a man who visits Hell. In Hell, there are three giant cauldrons in which the sinners are being boiled. On the rim of one stands a regiment of demons, shoulder to shoulder, constantly using their pitchforks to smack down the sinners who are trying to escape. On the rim of the second walk a few demons, who occasionally whack someone down. The rim of the third is empty, but no-one is getting out."What's going on here?," the visitor asks. "There are three kinds of people," the Devil says, "Jews, Poles, and Russians. Jews are in the first cauldron. When one looks like he's trying to escape, all the rest follow him. We need a lot of demons to manage them."
"Poles are in the second cauldron. Occasionally someone is trying to escape, but the others don't pay any attention. It takes just a few demons to deal with this kind."
"The third cauldron contains Russians: When one is starting to escape, all the others drag him back down by the ankles."
Why don’t lobster pots in Canada need lids?
Because when one of the lobsters tries to climb out, the others pull him down.