This is when you have to put a whole tub's worth of peanut butter inside her vagina. When that is complete, squeeze some of it out and then begin to 69.

"After hearing about this move, my partner's vagina is still full of peanut butter"
Have you ever heard of this move called the "Peanut Butter 69"?
by Master Of Pokémon April 17, 2016
Get the Peanut Butter 69 mug.
When you eat your spouse is booty with peanut butter while they eat your booty with jelly
Hey baby let's PBJ69 (peanut butter jelly 69)
by Brian618 December 2, 2015
Get the peanut butter jelly 69 mug.