Got this joke from a work distribution list:
Albert Einstein, Isaac Newton, and Blaise Pascal were chilling together one day when they decided to play hide and seek. They drew lots, and Einstein was the first to count, so he turns around and hears the skittering of feet behind him.
When he’s done, he turns around, and Newton is standing right there in front of him.
“Dude, Isaac, the point is to be the LAST one found!”
Newton pointed to the ground below him, in which he’d drawn a square, one meter on each side, said, “it wasn’t I you found,” and walked off in victory.
Confused? See the explanation in the comments.