straight gremmin Share definition Flag A term used to describe an ugly human being. A filthy, unattractive, sick, muttly creature. D: So did you see his girlfriend? S: Yeah man, she was straight gremmin. straight gremmin by shay dogg April 10, 2008 0 0 Get merch Get the straight gremmin mug. Buy Now — $32.95 See more merch