Referres to a sexual position involving 5 or more people standing in a line connected to each other in a sexual way
Hey,Nick, call Cassie, shanna, joe, and eric so we can have a sex train!!
by XxX MUCH LOVE XxX ~megan~ November 12, 2007
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a girl is on the bottom and there is a guy fucking her and then there is a guy fucking him up the ass and another guy fuckng him up the ass on so on and so fourth.
cindy,john,bob,joe,and jared just did a sex train
by kalee/kristen September 9, 2006
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The sex train is the term used to define an alpha male's female follower fanbase. The sex train is a term often used by highly desirable guys to describe all the guy's options in the realm of females. Everyone on the sex train is sexually attracted to said alpha male and has or would engage in sexual activity with him.
DutchEastIndiaCo: Dude that girl is totally on my sex train

YMKS: Your sex train is empty

DutchEastIndiaCo: **winks** all aboard!

*They proceed to procreate passionately*

Guy 1: You never get pussy

Guy 2: Are you kidding, the entire female population is up in my sex train, choo choo bitch.

Guy 1: Even my sister?

Guy 2: Handed that one a first class ticket yesterday!
by DutchEastIndiaCo. October 11, 2013
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When 3 or more people hot glue the tips of their penises and inserts them into the person in front of them while the conga line dance plays in the background.
Simon-Hey Steve do you want to have a Texas sex train with me and Johnny?

Steve-No my tip is still sore from last nights

Simon-Pussy
by Bigboyyeet25 September 18, 2018
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An interesting proposistion.
Where might I find this BST that I have heard so much about?
by Chris G: Unibrowed P-I-M-P January 12, 2005
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A goat that has been trained to have sex with humans. They are sometimes taked to an orgy as a curosity and to make it more kinky. Makes a good pet for a pervert.
John's got one of those sex trained goats.
by Deep blue 2012 February 21, 2010
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A dog that has been trained to have sex with humans.featured in some kinds of porn and sometimes brought to an orgy as a curosity or to make it more kinky or as a pet for a pervert ect.
Guss what John's got one of those sex trained dogs.
by Deep blue 2012 December 1, 2009
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