knuckle tuck

A knuckle tuck is when one curls up one's finger, tucks said finger into the receiver's anus, and continues to add more and more fingers.

Oh my God, Becky, Bryson knuckle tucked my camel toe for an hour straight.

by CarlTheCamel December 12, 2015

Knuckle Tucking

When a male tucks his weenie between his legs.

During a scene in "Silence of the Lambs", Buffalo Bill is "Knuckle Tucking" infront of the mirror.

by hiddenPilgram October 05, 2011