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Explanation of accomplishment or success, usually used in the context of multiple successes.
I quit my job, started dating a hot girl, and won the lottery. Boomtrain.
boomtrain by nicholas76 July 23, 2012

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
the period of time starting when you first realize you're excited and ending when you have a complete erection
I started bonering when Julia gave me that backrub at work this morning.
bonering by BBoyStance23 September 3, 2010

bonerring 

a large number of guys giving and recieving anally forming a circle
I heard there was a 50 guy bonerring at the gay club last night
bonerring by danbomb July 24, 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

Bonerfingers 

The act of performing "spirit fingers" in front of your crotch while exclaiming "BONER FINGAHS!" can be used as a method of saying hello, or describing something as awesome.
Person a: oh bonerfingers.
Person b: whats up man.

example 2-

person a: man last night was serious bonerfingers

person b: yeah it was the best party ever
Bonerfingers by B Shady October 19, 2008