A term for a lesbian sex act similar to scissor sex where the action moves from side to side rather than back and forth. the term derives from the stacking of labia which resembles a stack of pancakes.
by Gigantic Twerp August 14, 2014
Another typical way of describing a women masturbation. just like a guy jackin dick, Jackin Flaps is jackin it with a womens vaginal flaps.
by The Stuffinator Knowhow March 06, 2015