When you want to call a friend a stupid dumbass, but while saying it you realize he/she is physically dangerous, so you stop short while saying dumbass.
Stupid Dumb Bitches are those who go above and beyond the steryotypical actions of both stupid bitches, as well as dumb bitches. SDB's can be utilized in any manner and treated with little respect.
Devan is a stupid dumb bitch.
Go get me a sammich, you stupid dumb bitch.
I heard that girl amanda j. has herpes and doesnt wash her self... what a SDB.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.