Threechum 

Engaging in a threesome with a bi-curious secret service agent

The wife and I just pounded the ass off our off-duty security detail. It was a raging hot threechum.

Threechum by doctor mantis toboggan April 16, 2014

threesum

Having sexual intercourse with 2 people at the same time

Last night i had a threesum with these to chicks

threesum by Raynersdfgcvb June 13, 2006

Threesum

Sexual intercourse between three people, usually hotter when three girls.

After hanging up on a Skype call, a threesum is usually what partakes as a nighttime activity

Threesum by iMindfreak October 30, 2011

Threesum

Sexual Intercourse involving a male and 2 women.

intercourse involving 2 males and 1 women is a train.

The crowd began to advance upon the Threesum, and Omally was in the vanguard. By then the Threesum was already past its prime.

Threesum by catniporangejuice March 22, 2022

National threesum day 

Day when a girl gets tagged teamed by two males

National threesum day is the hottest

National threesum day by ChronikGodz April 11, 2019

THREECHUM 

THREECHUM: Three friends or "CHUMS" that do something together. Movie, Dinner, Club, Casino, just hang out whatever you want it to be...

"hey babe, i'm going out tonight for a THREECHUM with Justin and Alex at the bowling alley"

"I had to cancel my double date because I was called into work, so my girl is going for a THREECHUM movie night"

THREECHUM by LuvmyH3 February 29, 2012

threedumb 

when three people play dumb, or pretend not to know something collectively, as a large joke
it can be used in place of "conversation"

"Did those guys just have a threedumb about sperm?"

threedumb by happyhappyhappyhappyhappyhappy April 19, 2014