A hormone released when you are very angry and about to blow. This hormone helps release your inner beast, stimulating your anger and making you (temporarily) feel better.
by Will.I.Am22 October 22, 2009
adj. when something is so unbelievably awesome and fantastic that everyone simply stands in awe of it for several miraculous moments. I believe this word spawned off of the the word beastosity which is the noun form for such an event. see "beastosity level", a rating system.
last night i was tripping on acid and i started hallucinating about Santa doing the foxtrot with Satan in Toronto, man it was totally beastosterone.
by j-moné June 1, 2005