It ain't nothing but a peanut Share definition Flag A saying used to psych your self up, just before liftin wieghts. Used by ronny coleman. David "This weight is really heavy" Tom "It ain't nothing but a peanut" It ain't nothing but a peanut by dark0dave February 18, 2010 0 0 Get merch Get the It ain't nothing but a peanut mug. Buy Now — $32.95 See more merch