A countably infinite number of mathematicians walk into a bar. The first mathematician orders a beer. The second orders half a beer. The third orders one third of a beer. The bartender says "whoa, I'm going to run out of beer!".
An uncountably infinite number of mathematicians walk into a bar. The first mathematician orders no beer. The second orders no beer. The third orders no beer. The bartender says "whoa, I'm going to run out of beer!".
This is an experimental thread. It is somewhat in the spirit of the Rationality Quotes Thread but without the requirements and with a focus on humorous value. You may post insightful jokes, nerd or math jokes or try out rationality jokes of your own invention.
ADDED: Apparently there has been an earlier Jokes Thread which was failry successful. Consider this another instance.