1 definition by Rumblygrumbly

Top Definition

A baby, toddlers, or small child's penis.

Our 2 year old Jonathan ran into the living room with his hand in his diaper as his 4 year old sister Melody screamed out - "Stop wanking your winkus!!!!!"

by Rumblygrumbly February 10, 2016

Buy a winkus mug!