An infinite amount of mathematicians walked into a bar. The first ordered a pint, the second ordered a half pint, the third ordered a fourth-pint, etc. The Bartender eventually walked up and gave them two pints and said: “you mathematicians don’t know your limits.”

An infinite number of mathematicians walk into a bar. The first one orders a beer. The second one orders half a beer. The third one orders a fourth of a beer. The bartender stops them, pours two beers and says, “You guys should know your limits.”