Simpsons Math.

Andrew Nestler has compiled a neat list of math and mathematicians on the popular TV show The Simpsons [wiki]:

Lisa dresses up as a boy to get into the boys' math class. The teacher writes the equation Y x Y = 25 on the board.

Teacher: Now, how many different numbers can Y be?
Lisa as Jake: That's easy - just one, the number 5.
Teacher: Wrong.
[Lisa gasps.]
Martin: There are two possible solutions: 5 and -5.
Lisa interior voice: Oh my god, I was wrong - and by being corrected, I learned! [happily] And no one cared about my feelings!

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