the sexual phenomenon which occurs when one member of a sexual party is on top of another party member, whilst thrusting up and down on an erect penis. The penis suffers "abension" when the partner on top thrusts upward to quickly causing the penis to exit the vagina, or anus, and on the insuing downward thrust, the erect penis is slammed and "abended" by the lower torso of the thrusting partner.
by Andy G boyee ~djandots~ December 6, 2004