n: a group of men engaged in a reciprocal, linear bufu party, each one giving *and* getting (except the front and the back man). The 'choo-choo' refers to how the synchronization required and the train of people would make this look like an old steam engine running.

Also, and more commonly, denoting an event which boils down to effectively a lot of mutual reamage or time wasting; good or bad connotations possible.
Person1: Did you go to the project lessons-learned meeting?

Person2: Naw, man, I figured I'd just get the meeting minutes emailed to me, and miss the bufu choo-choo that meeting must have been.
by Old Slangy McSlangerson February 7, 2011
Get the bufu choo-choo mug.
This is when you take on something larger than anticipated in your back passage...on pulling out it causes the expulsion of the contents of your bowels and an involuntary cry of 'woo woo' like a train.
"oh my god...you look awful...what happened to you last night"

"I got shattanooga choo chooed"
by Boom Ting December 10, 2010
Get the Shattanooga choo choo mug.
a person blamed for evey thing but never did a thang yet all ways A round to get blamed.....choo
Look what choo did
choo did it first
by treyrage September 5, 2009
Get the choo mug.
Choo is a recent slang word meaning hot,sexy,fire.if you like a girl you should whistle and say girl you too Choo and she'll know you like her
'Woah girl you're choo'
'Shes so choo'
by Supermario2468 July 13, 2014
Get the Choo mug.
The act of forcefully poking somebody in the stomach with your finger. While doing this, you say the word "choo" in a high-pitched voice, meant to signify a laser hitting the victim's stomach.
Person 1: *poke* CHOO!

Person 2: Ow, what the fuck! That's so annoying. That's going to hurt tomorrow and cause physical flashbacks.

by keef_richards November 11, 2006
Get the choo mug.
A long line of gay guys having butt sex
Dude yesterday I decided to join a choo-choo train and now my butt hurts
by Jerry and B-Dude February 7, 2009
Get the Choo-Choo Train mug.
Fornication involving the use of an armpit where the male inserts his big veiny bastard of a cock into the females armpit, possibly sweaty but most of all preferably freshly shaven, or Western European style to avoid all chances of unwanted friction. Then, soon after the male inserts his Trouser Trout into her slippery pit, she goes on to make an up and down arm motion, something similar to a conductor pulling on the train horn, hence the Choo Choo, and helping to create all sorts of additional pleasure for the male, leading to a climax superior even to that of having sex with a young, feeble sheep.
Man 1: "Hey man, I'm looking for somethin' new in the bedroom, any suggestions?"
Man 2: "Isn't your girlfriend from Paris?"
Man 1: "Yea, why?"
Man 2: "Ever heard of the Armpit Choo Choo?"
by Call Me Brad November 17, 2009
Get the Armpit Choo Choo mug.