The peanut butter smoothie acourding to a few select people in the US Army Airborn School, Bravo Co. Hold Overs is when one uses peanut butter as an anal lubricant. That's the word around the camp fire.
An example of this would be applying peanut butter to your peins and or anus and proceding to in gage in sexual intercource in the rectal area. Using different types peanut butter such as chuncky or smooth will result in diffrent types of dessired pleasure. I recomend mixing and matching, you never know untill you try.
I gave the bitch a peanut butter smoothie and she still wanted a reacharound.