A small flap of skin that covers the tip of the anal opening. It protects the anus from infections and raging pedophiles. Some religious sects, especially Orthodox Jews often have these removed much like the practice of circumcision.
Josh Williams has very tiny anal flaps.
by joshretarded July 25, 2010
1 more definition
A small flap of skin that hangs down over the anus caused from too much anal sex.
Man that girl got it soo bad last night that she's sportin' and anal flap.
by teknotronikgrrl420 October 11, 2007