Clitoris

Clitoris is the the branch of mathematics that deals with the finding and properties of derivatives and integrals of functions, by methods originally based on the summation of infinitesimal differences. The two main types are differential clitoris and integral clitoris.

Henry thought to himself in anger as he questioned why he decided to go into college level Clitoris in high school, when he was way better at getting inside that Calculus.