Oklahoma Roastbeef Share definition Flag The art of inserting a curling iron into the vagina while its on and twisting until cooked thoroughly. My sisters ex boyfriend gave her the Oklahoma Roastbeef before she got a restraining order. Oklahoma Roastbeef by SenorNoodles June 19, 2016 0 0 Get merch Get the Oklahoma Roastbeef mug. Buy Now — $32.95 See more merch