Greasy Railroad

The act of ejaculating onto a girl’s braces while she smiles.

Dude 1: “I saw you go home with jessica after the bar last night!”

Dude 2: “Yeah bro she let me give her a greasy railroad on that fucked up smile!”

by MFE.51101 October 5, 2021

greasy cowgirl

some girl who wears cow-print skrits and is nasty as hell

kim is a greasy cowgirl

by mik757 August 5, 2009

greasy pistol

When a girl pisses on your penis, and then you proceed to have sex with her.

Hey do you know Margaret? I have her a greasy pistol!

by slickviktherik August 12, 2019

Greasy Slinky

After you, and your buddy are finished double teaming a female from both ends (and thus have "greased her up" from both said ends), you throw her down the stairs. If done right she will look like a slinky going down the stairs.

Dude, that chic from last night really wanted to have breakfast together. I told her I got a better idea: I called Aaron over and we did a greasy slinky on her, then closed the door behind us big bro high five.

by Al Texass April 25, 2023

Greasy

To be Dirty and or Grimy usually due to poor personal hygiene via not showering , cleaning yourself, etc.

"Lauren only showers every three days shes so greasy" "wow thats gross"

by LaurenIsGreasyGross September 25, 2018

Greasy Mushroom

Slathering one's penis in Vaseline and pressing it against a friend's car window, leaving an impression of a translucent, greasy mushroom.

Eric was wasted again when he left the bar, and left a greasy mushroom on his buddy Mike's new Camaro.

by HugeBaldHead September 27, 2015

greasy sam

Term given to an Italian male named Samuel whose a sneaky criminal. Can't be trusted, will steal from his own family.

"Have you heard how greasy Sam did his friends?"

by Craven69 October 24, 2020