An idle person who will gladly yell instructions to you while you are busy baking a cake. Not to be confounded with the backstreet baker who, in this case, would be cooking meth.
"Bitch can't you see I can bake my own motherfucking cake; don't be such a backseat baker!"
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.