1 definition by Robotlover1234
The unit of measurement to make your dick seem longer than it is. (use smaller knuckles for better results)
Silas: what's your dick length according to The Knuckles Rule?
Mark: I got a six knuckle dick
Silas: damn bro mine is eight
Mark: are you using your girlfriends knuckles or yours?
Mark: I got a six knuckle dick
Silas: damn bro mine is eight
Mark: are you using your girlfriends knuckles or yours?
by Robotlover1234 December 5, 2022