Underground Railroad

Getting a blowjob from a black girl on a subway.

Latisha gave me the underground railroad last night.

by blakem January 3, 2007

Underground Pipe

verb. : A euphemism for the brown surprise, or butt sex.

There were alot of guys trying to lay underground pipe in the Manhole bathroom on Halsted.

by FFJeroni January 20, 2011

underground railroading

The act of scissoring assholes and transferring shit from one anus to the other

Guy 1: "What did you two do last night?"
Guy 2: "We were underground railroading until our asses overflowed!"

by thechocolatestarfish April 28, 2014

underground sport

A sport heard by many, played by few.

Clay: "Hey Dude! I've seen that before...What they doing there?? 7-on-7 throwing that Frisbee around!" Dude Smith: "Oh Dude! That's Ultimate Frisbee...That's one of those Underground Sports! You gotta be a Bad Ass to play that!!"

by Ohsider December 23, 2015

Seattle underground

the weird tunnels under Seattle that you’ve heard existed but really don’t want to spend money on a tour to see.

Yeah, I’ve heard Seattle underground is pretty cool, I’ve never been there though.

by Seattle rat burger November 10, 2020

underground tweakers

The type of tweaker that goes behind you and mixes up all your organization, robs you, and/or lurks in the shadows and does the unknown worst kind of ugliness and meaness.

Those underground tweakers took our lawn furniture to Tom's and brought his lawn mower over to our pool for a swim last night.

by Rhodhisian May 29, 2017

underground sense

The sense that you are get used to the atmosphere by underground transportation especially for the subway. When you get the underground sense, you may feel confused about directions and voices and uncomfortable with the sunlight, etc.

Every time I need a little while to shake off my underground sense before I come to the right exit in the subway station in Shanghai.

by Hart Bullock November 12, 2017