Guefasto Share definition Flag A man that is bisexual, likes to paint his nails (normally black) and takes too much time fixing his hair up "My boyfriend is a guefasto""His plant acts too guefasto" Guefasto by CrackHeadEmi May 11, 2022 0 0 Get merch Get the Guefasto mug. Buy Now — $32.95 See more merch