osaphobia Share definition Flag Phobia of giving/recieving head oral sex for fear of attracting an STD or being rejected or having your teeth touch the genitalia. ie. Listen to Dane Cook's osaphobia story aka: head osaphobia by Halaj McBarretto October 13, 2006 0 0 Get merch Get the osaphobia mug. Buy Now — $32.95 See more merch