S.O.S. Share definition Flag A military acronym for cream-chipped beef meaning "Shit On Shingles". (Shingles referring to toast) Awh damn, S.O.S. in the mess AGAIN?! S.O.S. by Jaekwon Hudd-E January 25, 2011 0 0 Get merch Get the S.O.S. mug. Buy Now — $32.95 See more merch