The act of parting the vaginal lips (the bananas) with one's tongue while performing oral sex on a woman. The insertion of the tongue is akin to adding whipped cream to the delicious ice cream (vagina) center.
Guy/girl A: I gave my girl a real good poonanisplit last night. She said it was the best she's ever had.
Guy/girl B: Dayum! That's gonna be hard to top!
Guy/girl B: Dayum! That's gonna be hard to top!
by Pleasenthanku February 23, 2017