A club that can only be joined by writing "I love Pen15" on your forearm.
Person 1: Hey! Are you in the club?
Person 2: What club?
Person 1: The pen15 club!
Person 2: Cool! How do I join?
Person 1: Just write "I love Pen15" in your arm!
Person 2: *Writes* Oh shit.
by The Snick-Snack February 23, 2014
Get the merch
Get the the pen15 club neck gaiter and mug.
A club in most middle schools around the country. Consisting of mostly prepubescent boys.

Each member receives a "club card" with their name and "Pen15 Club Member" on the card.

When the new member receives the club card then realizes that he/she has just joined the penis club.
Joe: Billy do you want to join the Pen Fifteen Club?
Billy: YES! I will conform to you all because I want to be cool and popular!
Joe (while snickering): Here is your membership card!
Billy: You wrote Pen15 Club! that is the same as the Penis Club! HAHA, OMFG, LMAFO, LOLZ!
by Red Sim February 23, 2010
Get the merch
Get the Pen15 Club neck gaiter and mug.
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
by jeff kin July 30, 2019
Get the mug
Get a PEN15 Club mug for your father-in-law Trump.