2012-03-13
Explanation
This comic is a math-themed insult joke. A woman angrily shouts at a man: "Oh yeah?! Well, the sine of your penis approximately equals your penis!" The caption below reads "Math insults are the best insults."
The joke relies on the mathematical identity known as the small-angle approximation: for small values of theta (measured in radians), sin(theta) is approximately equal to theta. So saying "the sine of your penis approximately equals your penis" is a roundabout mathematical way of saying his penis is very small. It'''s a nerd'''s version of a classic crude insult, dressed up in trigonometric language.
The votey panel extends the joke with two written identities: "sin(theta) approximately equals theta for small theta" (the standard small-angle approximation), and then "1/sin(theta) approximately equals yo mama'''s volume for small theta" -- combining the math insult format with a "yo mama" joke, suggesting that as theta gets small, 1/sin(theta) blows up to infinity, just like yo mama'''s volume.