At a barter network's annual holiday show and trade expo, business adult toys and other unmentionables for "adult eyes only" (delicately.
Sagu, an adult male chimpanzee, holding the rib case of a red colobus The primates' food-for-sex barter occurs indirectly, over the course of.
http://www.cnn.com/2008/LIVING/personal/08/25/sex.for.stuff/index.html?iref= mpstoryview Dunno. Most people don't characterize casual sex as a barter arrangement. .. when women resort to sex for things, but they were consenting adults.