Blackboards in Pr0n
October 11th, 2011
2 comments
Watch the image closely. – No! Not the stockings, stupid! THE BLACKBOARD!
Trigonometry in Pr0n:
Compound Angle Formulaesin (A + B)
= sin A cos B + cos A sin Bcos (A + B)
= cos A cos B - sin A sin Btan (A + B)
= tan A + tan B
1 - Tan A Tan B
The blog “Blackboards in Porn” is just hilarious!