the rule which state that you are able to date someone 2 years older or younger (2 knuckles from the middle both ways) without consiquence
Dude1: yo last night i hooked up with this hot chick from collage
Dude2: u mean the blonde one? shes 2 years older then you!
Dude1: knuckle rule
Dude2:good point, nice job last night
Dude2: u mean the blonde one? shes 2 years older then you!
Dude1: knuckle rule
Dude2:good point, nice job last night
by Jesse Mitchell January 3, 2008
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