When ejaculate is transferred from one female to another by way of mouth.
I was screwing my girl and finished in her mouth she then turned and started the gravy train with her best friends.
by dirt_circle_destroyer July 8, 2016
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1. An abnormally large phallus usually associated with elephantiasis or other diseases of the lower extremities.

2. Sperm.
Looks like he's packing a gravy train.
"Last night I sprayed my gravy train all over her face!"
by Daniel Lindsey January 27, 2008
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A very difficult Gay sexual act normally consisting of 6 gay men in an orgy. Four of the men are having anal sex , all while underneath them the other two men assume the ball licking position as the other men are fucking doggystyle. In order for the position to work the two men getting it in the ass should need to take a huge shit , or have a bad case of the runs. Immediately after the two men servicing the ass givers cum in the buttholes , the guys who took it in the ass then proceed to shit on the receivers down below .

Hence the phrase Gravy Train because its a bloomin Shitty Gravy like mess afterwards.
We did the Gravy train while my wife was away last week , and my butthole still hurts !!!!!
by Ass monger November 6, 2006
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When a male covers his penis in Turkey Gravy and then has procedes to have sex.
Yo - Last night she rode the gravy train.
by His Grace March 8, 2008
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A line of guys who enjoy the company of other men. A sort of leap frog of sex if you will. The man in the back is the pitcher and the person directly in front of him is the catcher... he is also a pitcher for the guy in front of him. The men alternate from a standing to bent position engaging is homosexual activity.
I walked into your dads room and saw him in the middle of the gravy trian smiling and laughing.
by UT fuckers February 15, 2005
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