A sexual act by nature (fetish) the chattanooga choo-choo is when you sink your face into someone's arse and the sinkee toots all over it.
Jill wanted to break up with John after their last fight and she made her point by giving him a Chattanooga choo-choo last night.
by MC Carver October 14, 2016
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When a guy skeets in a girls butt and pulls out. Then shit and skeet ooze from the girls butt, and the guy collects the mixture. He puts this mixture in a small dessert bowl and smears it on the girl’s face with a popsicle stick. That is a Chattanooga mud mask.
by MaggieO September 5, 2022
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A sexual act / contest in which three or more men (or women with a strap on) perform anal sex on each other in a line. The member of the train that has the most fecal matter on their penis is the winner. The loser is the person from whom the winner has just removed their penis. The penalty for losing is that the loser must clean the penis of the winner by whatever means the winner requests.
Peter thought he was going to have a great night with his buddies until he lost the Chattanooga Poo Choo.
by Harry G. Balzak October 18, 2011
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To fill the windshield wiper fluid reservoir of a friend, nemesis, or ex-girlfriend with male genetic material. Works best with a comically large dose of seminal fluid.
Man, I gave my ex a Chattanooga car wash and she was pissed. I saved up for two months but it was worth it.
by Motor Enthusiast February 25, 2011
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Accomplished by a male having intercourse with a partners bent elbow or armpit.

Men in Chattanooga, TN will stick their dicks anywhere!

Variations:

Louisiana Hot Wing

Above mentioned technique with the addition of a warming lube. Hot sauce of any type for the more adventurous.
“I gave my girl a Chattanooga Chicken Wing last night” Might have been better if she didn’t shave her pits”.

Tabasco nearly melted my shlong the last time I hot winged your wife”.
by Greed65 August 6, 2009
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A variation of the train where all those involved are related.
Hey Billy Joe let's go on down to Mary Sue's and run a Chattanooga Choo Choo. Make sure cousin Earl and Bob are there.
by Techs July 14, 2006
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When one ejaculates sperm onto another ones chin.
Betty would prefer a Chattanooga Chin Strap than a Pearl Necklace any day of the week.
by ChanceTR July 21, 2015
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