boner train

the medical miracle that describes the synchronization of many men's erections stimulated by a non-sexual event

Is there a boner train going on right now? I can see a few pairs of tight pants?

boner train by whoisgary November 14, 2016

bone train 

when more than 3 guys make an anal sex train. grinding in and out of each other's anus like a locomotive. the guy in front is called the conductor.. all partneers thereafter are called cabooses.

"dude, i was at that gay club the menagerie the other night and these 5 guys were having a wicked crazy bone train."

bone train by valme February 16, 2006

Bone Train 

It's when someone runs into someone from behind

Or

When two people are tounching when one is behind the other, and are both facing the same way.

"ohh look theres a man boning a sheep lets BONE TRAIN it!"

"ohh look theres Griffo lets BONE TRAIN him!"

Bone Train by Gino D March 16, 2008

Bonerbrain 

One who is of little intelligence and/or someone who acts in an unpleasant manner, a derogatory term as to compare someone to a penis inside of a brain.

I was building a giant horse dick in Minecraft and he blew it up with TNT, what a Bonerbrain!

Bonerbrain by Duo2Cuo March 31, 2011

Bonertainment

A portmanteau of Boner and Entertainment. Something that is both sexually arousing and entertaining.

Watching the women's tennis, I became aware of bulging in my pants, I then realized I was watching Bonertainment.

Bonertainment by hemordroid March 21, 2017