When you stick your thumb in the bumm and the love hole and alternate in and out in and out in and out as fast as you can making a noise like "nenenenene"
Tole threw trash out of the car when I told her not to so I gave her a double thumpkin.
by |fn|Gravyfury December 4, 2007
Get the Double Thumpkin mug.
Placing the right thumb in the vagina, and the left thumb in the butthole.
My wife moaned and groaned as I gave her a no-lube double thumpkin.
by SlimGravy January 17, 2019
Get the Double Thumpkin mug.