dead deer Share definition Flag Used to describe a stag (man about to be married at a party), who gets caught in a situation in which he's truly busted. Jack: So, Nancy saw Joe and Dana at the stag party, huh? Dan: Yeah, Joe's so a dead deer. dead deer by Doukie February 17, 2009 0 0 Get merch Get the dead deer mug. Buy Now — $32.95 See more merch