When you are hitting it from behind and have your thumb in her butt at the same time. Thumb-butting it.
by Blibicer November 26, 2017
by Thisisntmyrsalname1 September 17, 2022
by Biggaybear April 2, 2013
While playing the giver in the "doggy style" sex position, insert your thumb into the rectum of the reciever.
by The Cryomancer May 20, 2021
When you insert your thumb into a Connecticut girls ass while hittin it from behind. Giving you leverage for more thrust.
by Phat56Pat January 27, 2023
by Snakey Sneak October 18, 2019
by wassykicks July 9, 2023