Here are a few math limericks. Taken, by permission, from www.trottermath.net.
An algebra teacher named Drew tried to find the square root of 2 he found it between a quarter and 14, but couldn't get closer. Can you? There was a young student from Crewe Who learned how to count in base 2. His sums were all done With 0 and 1, And he found it much simpler to do. A mathematician confided that a Möbius band is one-sided. and you'll get quite a laugh if you cut one in half, for it stays in one piece when divided. A dozen, a gross, and a score, plus three times the square root of four, divided by seven, plus five times eleven, equals nine squared and not a bit more. — Jon Saxton 'Tis a favorite project of mine a new value of pi to assign. I would fix it at 3 for it's simpler, you see, than 3 point 1 4 1 5 9. — Harvey L. Carter Integral z-squared dz from 1 to the cube root of 3 times the cosine of three pi over 9 equals log of the cube root of e. — Betsy Devine and Joel E. Cohen Absolute Zero Gravity, p.37