Pen15 

When someone wants to talk about penis's, but they don't want to get caught by teachers or other authority figures. For example, if they are mad at you, they will tell you to stop clutching your pen15, or they want to give you the succ, and will tell you to suck their pen15. If a teacher comes, just say you are talking about the newest model of pen, the pen15.

In the middle of school
Emery: Hey Rohan want to suck my pen15 after school?
Rohan: Sure!
Teacher: What are you talking about?
Emery: Oh uh I was just telling Rohan I got the newest model of pen, the pen15

Pen15 by DEPDIP May 23, 2017

Pen15 

Pen15 is a term used by boys in middle school when they want to talk about a penis. This gets written on notebooks and on friends as a joke. The user of Pen15 thinks that they are being clever by using a secret code that no one will understand.

Everyone understands it.

Pen15 is interchangeable with Pen Is.

Kyle and I were friends until he wrote Pen15 on my arm and got me in trouble with my mom. I'm grounded and not allowed to hang out with him anymore.

Pen15 by Japas May 4, 2014

pen15 

A different spelling of penis. Also used to be the name of a punk band in my school.

Did you see that Pen15 concert, sha? They sound so much better live than the cd they recorded!

pen15 by Sedi May 31, 2003

pen15 

Pen15 is a way of spelling penis when u dont wanna write it correctrly cuz ur too lame and embarrassed and it means u got 5 of em.

"my pen15 is itchy"

pen15 by pen15 lamo September 14, 2003

pen15 

penis

I have a pen15 bro.

pen15 by jl0728 May 31, 2015

pen15 

it is a code-word for penis

look at his small pen15

pen15 by dameem March 4, 2019

PEN15 

A prank for immature middle-schoolers. You walk up to another guy and ask if he has a "pen 15". When says no and asks what it is, you write "PEN15" on something and show it to him. Then you question his manhood and tell all his friends that he doesn't have a dick and doesn't even know what it is.

Hey man. Do you have a PEN15?

PEN15 by WeirdTard April 9, 2019