C1S1 Share definition Flag See one send one. As in snap chatting you chugging a beer and sending it to a friend and they have to do it back See one send one(C1S1) bitches, *chug,chug* C1S1 by ChuteEm July 24, 2020 0 0 Get merch Get the C1S1 mug. Buy Now — $32.95 See more merch
