Sinibomber Share definition Flag A person with a crazy arm who can throw 1,000 feet without even trying. Girl: Did you see that Sinibomber's arm? Guy: Oh, I did Sinibomber throws far. Sinibomber by wlknh8rd57 February 21, 2011 0 0 Get merch Get the Sinibomber mug. Buy Now — $32.95 See more merch