pen15-sive 

When someone appears in deep thought about the male genitalia

Gary's looking rather pen15-sive today

pen15-sive by DaZ91 December 25, 2007

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

PEN15 Club

A cool club that you and your dad can join

person: Are you apart of the PEN15 club?

Guy:YA THERE ARE SO MANY PEN15's

PEN15 Club by jeff kin July 30, 2019

Pen15 

This stands for P-E-N-I-S..As you can see the 15 at the end of pen15...the 1 resembles the "i" and the 5 resembles the "s". Lots of grade schoolers ask about, "do u have a pen15?" they say that its a pen, so when they say "no" they start to humiliate the person. This is a very imature act.

Yo sup? hey do u have a pen15?
WHAT?!? whats a pen15
oh its a kewl pen, all the boys have them
u serious?
well, do u have 1?
NO
AHAHAHAHAHAHAHAHAHHA

Pen15 by Dave July 16, 2003

Pen15 

The word penis spelt like this so elementary and middle school and sometimes in rare occasions can write the word on your hand or wrist by asking if you want to join the Pen club and are told by the asker they are Pen14 so you'll be Pen15 and they can laugh because they got you to let them write penis on your arm

Josh asked his school mate Alan if he wanted to join his new pen club, Josh then explained to Alan he would be the 15th member of the club. Alan agrees and doesn't realize until after Josh writes Pen15 on his arm in sharpie it's actually the word penis and Josh and a couple other class mates laugh because Alan is next to present his essay to the class and has on short sleeves

Pen15 by Penclubleader November 28, 2018