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
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The act of getting Shit stains in the underwear from a lack of wiping the butt.
Man.. I did my laundry and I had to bleach my underwear due to choo choo marks
by Disel2013 March 30, 2017
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The loud forceful part of a sneeze that usually comes after the ahh...ahh....
Ahh...ahh... Choo! Ahh....ahh... Choo! said Derek, as he sneezed into his blue striped handkerchief
by Choo Hanky September 27, 2010
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nice or awesome , you can hear this often in Lafayette, Louisiana Choo........
"Choo", look how sexy that guh right da is my baw.
"Choo", Caddy Co on fire, when he on da stage.
by Co Dean June 19, 2011
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A sugary, chocolaty, very tasty, mildly alcoholic girl drink for those who want to drink, but can't stand the taste of alcohol.
Dude, I can see your vagina from here. Finish that damn drink. It's a chocolate choo-choo and tastes like dessert.

That chocolate choo-choo is mainly made up of sugar and air, no wonder it's tasty.
by vt26 May 14, 2008
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when a girl gathers a bunch of guys and has sex with them one after another
oh dayam! bree got on that choo choo train last night? what a slut!
by nibbs July 19, 2006
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The most sweet-ass sizzlin train that ever did choo choo, Today, trains have pride of place in Chattanooga's former Terminal Station in Tennesse, also a popular song by Glenn Miller,it was no.1 for nine weeks on the Billboard Best Sellers chart.
"Wow did you see that train it was so chattanooga choo choo"

"That car was almost as fast as a Chatta choo choo"

"This song has been chatta chooing in my head all day"
by The BGK King March 9, 2009
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