A widely popular phrase of abbreviated words to sound almost nothing like the original meaning:
1) A large (Massive) group gathering (Session) of people with the Y chromosome (Peen); Hanging out; Chillin with the bros.
2) Mass Peen Sesh can also refer either to Gay/homosexual intercourse between many men.
1) A large (Massive) group gathering (Session) of people with the Y chromosome (Peen); Hanging out; Chillin with the bros.
2) Mass Peen Sesh can also refer either to Gay/homosexual intercourse between many men.
Dude, friday we're having a Mass Peen Sesh at joe's for some mad ish.
Mass Peen Sesh at Cinema 10 on Saturday, you comin' bro?
"Okay so likkkeeee were havvingg some mass peen sesh at my houseeeee ;) come with ur toyzzzz!"
Mass Peen Sesh at Cinema 10 on Saturday, you comin' bro?
"Okay so likkkeeee were havvingg some mass peen sesh at my houseeeee ;) come with ur toyzzzz!"
by Phoocakez January 26, 2010

by emilaaaay May 19, 2014

Man: omg my girl is such a bollock peen lord
Friend: wdym?
Man: bro she swallowed the dick and the balls fam
Friend: wdym?
Man: bro she swallowed the dick and the balls fam
by LoadBuster98 May 5, 2021

The act of inserting the claw end of a hammer into your lovers anus, and then furiously yanking upward, thus mimicking the fresh churning of butter in the mid 19th century.
Paul was getting the Paul-Peen Hammer from David when things got out of hand, and a window was broken when the hammer slipped out of David's hands.
by BB's Mom January 6, 2023

A group of fuckboys, who have tiny peens and waddle because they have churned butter. Scarier than big boi gang
by peeen April 16, 2019

One's natural reaction to slaughtering an enemy balloon in the skies of Guns of Icarus by the wrath of WARPIG.
by WARPIG69 August 25, 2013
