Also known as "MO"tivity. Shortened version of homosexual activity referring to non-sexual out of doors activity. Could be anything from a gay rally to simply holding hands or hugging.
1. The measure of a man's ability to attract women using the massiveness of either his chest, leg or other muscles/ bodily parts. (noun)
2. A type of strength, contrast with flaccidity or softness. (noun)
1. Evans' masstivity attracts many girls.
2. The masstivity of our debate team allowed us to overpower our flaccid opponents.