mantrain 

A sex position in which a group of men are either penetrating each other in a line, or performing fellatio on each other in a circle.

All aboard the MAN_TRAIN! CHOO CHOO
The mantrain lasted for several hours and included vigorous pelvic-thrusting action.

mantrain by tpyo May 13, 2006

man brain moment 

when a man cant get his thoughts out of the gutter and verbally exercises his manhood toward a female with grunts and whistles or pelvic thrusts to mid air.. ,or just simply being an insensitive prick with man brain stupidity .For he may be excused by announcing (my apologies I'm having a Man Brain Moment) or in text ..(sorry luv im having an MBM..)

out on the town with the misses she accidentally drops the keys and bends over in front of you,you grab her but and start pretending pelvic thrusting with one arm in the air swayin..thats havin a man brain moment .or shes balling her eyes out and you say whats the footy score!! oops sorry luv MBM..

man brain moment by helrazr June 25, 2021

mantrain 

A group of males in a line, coupled to each other like train cars through anal penetration.

The men shouted, "CHOO CHOO All aboard the MANTRAIN" as they engaged in aggressive anal intercourse.

mantrain by tpyo May 24, 2006

Global Mantrain 

Established in 2010, Global Mantrain is an annual event where men of the world connect in sexual intercourse with the ultimate goal of connecting the first person with the last person, leading to a man train that connects all the way around the world. To ensure the train stays connected boats are used to go across any body of water.

GLOBAL MANTRAIN 2010!!!!!!!!!!

Global Mantrain by global conductor November 24, 2011

madbrain

Someone who is crazy, or acting crazily.

"Look how recklessly that man is driving. (he is a) madbrain"

madbrain by bananamilkshakefiend October 15, 2009

Manbranding

When a Man acts in a way that improves his masculinity in the eyes of others.

Greg opened a beer bottle with his belly button the other day. Yeah he was Manbranding.

Manbranding by CMC Dir October 31, 2014

Mandrain 

1. A female who can give some intense blowjobs.
2. The result of an extreme blowjob.
3. The action of giving a blowjob for an extended period of time, as though you're trying to suck the life out of a man.

Ugh, I feel so tired, that mandrain sucked me dry.

Wow! I got totally mandrained last night.

I was maindraining this guy, he totally fainted when I finished.

Mandrain by KIDONKULOUS February 23, 2009