Gaymo Share definition Flag An especially anally retentive person who hangs around a university for years after graduation, to meet and hang around with young female students. DUUUDEE, that guy damo has been here for years, he's a real gaymo Gaymo by louie micropenis July 13, 2003 0 0 Get merch Get the Gaymo mug. Buy Now — $32.95 See more merch