noun. Not to be confused with nipple-obsessed men, women, and children, this refers to a gorilla, ape, monkey, orangutan, chimp, bonobo, or other evolution-challenged individual who simply must have those precious mammary moments--or they go up the wall (er, tree).
Real citation: "Two American women sacked from their jobs caring for a "talking" gorilla are suing their ex-employer for allegedly ordering them to bare their breasts to the nipple-obsessed simian."
("Gorilla with a nipple fetish," Feb 21, 2005, http://www.theage.com.au/text/articles/2005/02/21/
Made-up citation: "You say 'nipple-obsessed simian,' I say 'non-human nipple connoisseur."