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.
yo meehan, go give yourself an autoblumpkin in your moms bathroom.
by The Meehan October 17, 2009
To suck yourself off while dropping a deuce. See blumpkin.
Everyday at 5:00 PM Tom gives himself a salary auto-blumpkin at work.
by milfhunter37 November 03, 2003