A blumpkin that is given to oneself, usually while taking a shit. When you suck and/or masturbate your dick; waiting for the climax to push the turd out. Gives an extra sense of stimulation.
by The Meehan October 17, 2009
by milfhunter37 November 03, 2003
by automblumpkinitis January 18, 2008
"Last night I was taking a huge dump, right? So to ease the pain a little bit, I gave myself an autoblumpkin. Best shit ever.
by Officer Dickhead July 28, 2016