Aidsish Share definition Flag Fucked up beyond all recognition, similar to fubar. A condition or situation as severe and undesirable as an incurable disease. Yo, the crowd coming into the bar after the Dave Matthews show was completely Aidsish. Aidsish by Mark Hoffmann December 7, 2007 0 0 Get merch Get the Aidsish mug. Buy Now — $32.95 See more merch