POPSUGAR Love Textbook Perverted Math Textbook Some Perv Wrote a Textbook by GiggleSugar 3/06/08 5 Shares Like us on Facebook Sign up for our daily newsletter > Follow us on Pinterest What about the angle at which she lifts her heel and rams it into his shin? Thanks, College Humor! Read More TextbookSchool HumorSexy HumorPervertJapanMathHumorSchool Humor 37 Gifts For the Girl (Seriously) Obsessed With Pizza 32 Gifts For Your Booze-Loving Best Buds 12 Totally Inappropriate Elf on the Shelf Poses 21 Signs You're Shamelessly Obsessed With Christmas POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Get Inspired With Our Living Newsletter Personalize Love and Sex Tech Food Home Vegetarian DIY Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR. xChantilly 7 years Um, why is it tagged with "Japan?" The words are in Korean. k-squared 7 years Pythagorean theorem for the perverse, hah.