Just a guess, but the author of this immunology textbook has tried and failed to have a threesome. « » View Original Size × Share Tumblr Facebook Twitter Reddit Stumble Upon Email Embed × Share with friend Your Name Your Email Friends' Emails (Separate multiple addresses with commas) Send Submit a Picture From Rico P. on April 25, 2006 See More menage-a-trois textbook More By Rico P. View Profile Because you having not mastered grammar yet. Math. Reading. Success. Sperm? Dee-da-dee! I always knew softball players were retarded! Recommended Comments () Picture "Not only was this in a textbook, but my professor is the author." Picture How much work is required to move a textbook author (m = 1.36 x 10^2 kg) outside? Estimate how many people he will meet. Picture "I mean, I don't like red tights and yellow shirts on guys either, but why does my textbook have to be mean about it?" Picture Textbook Has Mildly Sarcastic Bonus Pages Picture A rare peak at the boring lives of textbook authors. Picture Textbook Interesting Fact Comments ()