pen15 

Exclusive club for those in 6th and 7th grade. Only requirement to enter is to have the club's name written on one's body part, such as an arm or hand.

Johnny, join the Pen 15 club! Alls ya need to do is let me write Pen 15 on your arm.

pen15 by MoonKnight November 25, 2002

pen15 

A mock spelling of the word penis. Can be used to trick ones friend.Mostly Done by children in the 5th or 6th grade.

Hey Mat you wanna join the Pen15 club? Just let me write Pen15 onyour hand

pen15 by Lincoln Barltett February 9, 2003

PEN15 

Something that people at the age of 12 or under write on one's body part. It is the ritual in which to get into the PEN15 club, if u write it the correct way, the 1 looks like an I and the 5 looks like an S, so instead of looking like pen with 15 latched onto the end, it spells out PENIS.

Lynn: Wanna join a club?
Caroline: Sure! what club?
Lynn: The PEN15 club! here, this is what it is!

(Lynn writes on Caroline's arm 'PEN15'.)
Caroline: What's PEN15?... OH FUCK!! YOU JUST WROTE PENIS ON MY ARM!!

Lynn: Haha, Sara showed me!

Caroline: you mean Sara from 6th grade? you talked to someone in the grade ahead of us?
Lynn: yeah, she wrote it on my arm first...

PEN15 by Valerie Mann December 30, 2010

pen15 

A word that, when handwritten, resembles penis. Write on someone's hand and good times will follow.

If you want to joing the pen15 club, you have to let me write it on your hand.

pen15 by Anonymous November 23, 2002

pen15 

Word that looks like penis when written out. Dumbass 12 year olds use it to trick each other.

Join the pen15 club. Here, lemme write it on your arm.

pen15 by mcnuggetdestroyer November 27, 2017

pen15 

something you write in very large print on your forehead and show off in public places.

hot chick: lance looks so dope with pen15 written on his forehead

pen15 by jimbob November 23, 2002

pen15 

a combination of letters and numbers for concealing the fact that you are saying penis

After jerking the jerk Kevin's pen15 was tired.

pen15 by Hey Sixman May 7, 2005