I missed the boat on all the science jokes but I had to drop my favourite two here because I didn't see them.
An infinite number of mathematicians walk into a bar. The first steps up to the bartender and orders a beer. The second orders half a beer. The third orders a quarter of a beer. By the time the fifth guy walks up, the bartender just pours two beers and says, "You guys are jerks."
A photon stops at a fancy hotel and checks in. The concierge approaches and asks if he could take his bags. The photon replies, "Oh I don't have any. I'm travelling light."
And just for the heck of it, one more:
Schrödinger's cat walks into a bar...and doesn't.
--
Player of Leech Farmer Nithhogr
