ABSGS Share definition Flag Alvin Björn Sommar Gunnarsson Syndrome a mental disorder that so far only has been observed in the Gunnarsson family from Alingsås, Sweden. This motherfucker has ABSGS! ABSGS by Zoinked19 November 9, 2020 0 0 Get merch Get the ABSGS mug. Buy Now — $32.95 See more merch