when a womans clitoris and it's hood protrude out further than the labia and the lips of the labia close on it like the flaps on a purse ; similar to camel toe but much meatier
This phenomenon is rarely experienced, it will only occur when partaking in coitus with a female with epilepsy and requires a clap on/off light for your room. The clapping rhythm as a result of the thrusting triggers a
seizure for the female participant resulting in a dramatical increase of the degree of stimulation to the males phallus.