Primate Prostitution

http://www.time.com/time/health/article/0,8599,1700821,00.html?cnn=yes

Apparently, one species of monkeys actually pays for sex! And no, they don't pay in bananas. Males of the species apparently would groom the female as a sort of pre-payment plan, and then afterwards the females' sexual activity would actually double (from monkey-boning about 1.5 times an hour to about 3.5 times an hour!) holy raunchy bananas!