The Ackles Ass Equation
From Super-wiki
Livejournal user potthead (2007-03-31) graphed the curvature of Jensen Ackles' ass as:
y=-(sin(x^(1.7/6)+4)+(1/x))+10
See here for maths and pictures.
In 2020, this equation was revived during a discussion on tumblr as to where the parenthesis belong in order to properly graph the equation. x^(1.7/6)+4 will graph a relatively flat line while (x^1.7/6+4) will graph the curve properly. Thus, the proper equation for the intended curve is actually:
y=-(sin(x^1.7/6+4)+(1/x))+10
A small and annoying difference that wildly changes the result, but that's math for you.
