peanutbutterankles Share definition Flag There is not definition for peanutbutterankles, it's just simply a fun word to say when you're not sober. "Duuuuuude! Guess what?!" "What?!" "....Peanutbutterankles." peanutbutterankles by [TyKuz] December 9, 2008 Get the peanutbutterankles mug.