Plumpkin pie
To be rode sexually by a morbidly obese female. Usually facing one another and not reversed which could be confused as a peanut butter pie. The immensely large woman will ride to her delight while the man has second thoughts of partaking in this pie. Gasps or wheezing between bounces will be audible.
The plumpkin pie he had last night has resulted in smashed oblong testicles and whip cream drippings. No more pie for that guy!