An abelian grape. Because he left a residue at every pole. That's the Law of Spline Demand. The dual of a cough. Because he wasn't Abel.
Lumberjacks make good musicians because of their natural logarithms.
My geometry teacher was sometimes acute, and sometimes obtuse, but always right. Statisticians probably do it. Algebraists do it in groups. Remember Americans pronounce z 'zee'. Integral z-squared dz From 1 to the square root of 3 Times the cosine Of three pi over 9 Equals log of the cube root of 'e'.