the act of inserting the finger up a subjects rectum then wiping the finger across the subjects bottom lip.
Look Ginner has fallen asleep , someone give him a "babba tash"
by doffer November 30, 2003
To wipe ones anal ring with ones fingers then to smear it onto an unsuspecting victims upper lip, causing distress and humour.
Broseph, i can't believe Cleetus just Babbatashed Shaniqwa! She has a badass Babbatash right now and i am not going near her!
by Sambohero April 18, 2010