This is a sexual act where 2 or more men have sex with a black woman at the same time. Many refer to 2 men having sex with a female at the same time as 'Running a Train,' hence the name since it pertains to the same act with a black female. The black woman who is part of the act can then be refered to thereafter as a 'Harriet Tubman'. (See Hariet Tubman). This act can be performed anywhere.

Billy: Yo last night me and Bobby had an underground railroad with that black girl Marissa.
Ralph: What do you mean?
Billy: We were chillin in my car & she started sucking my dick when Bobbby was fucking her from behind.
Ralph: Totally Awesome!
Billy: Yea, I changed her name in my phone to Harriet Tubman

Underground Railroad by Koozy September 15, 2006

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Underground Railroad

The route, or system of back streets taken when you want to avoid the main arterial roads and heavily trafficked areas of your Town/Municipality in order to ride dirty.

Tubman: Wanna smoke this blunt in the car?
Truth: Hell yeah
Tubman: Wanna smoke this blunt on the way to Taco Bell?
Truth:Yes, but lets take the underground railroad, cops are out in full force Friday night.

Underground Railroad by Czechxican October 2, 2010

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Underground Railroad

An act of sex when a woman licks a man from the top of the ass crack, across the gouche and to the tip of the penis.

Bitch gave me an underground railroad.

Underground Railroad by NxIK April 18, 2008

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Underground Railroad

When any two people get on all fours, posterior against posterior, and transfer feces, sex toys, vegetables, or any other objects back and forth.

My girlfriend said she wanted to spice up our sex life, so I asked Joey for advice and he suggested the Underground Railroad.

Underground Railroad by Dave Kelly August 2, 2006

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Underground Railroad

Was neither underground nor a railroad. It was the different ways that Southern slaves escaped their masters by getting help from abolitionists to lead them to freedom in the North. Made famous by Harriet Tubman.

Toby: We gots ta gets free I her da massa's call!
Chicken George: Hopes we kan finds hep in da underground railroad!

Underground Railroad by thedzone October 8, 2009

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trucker's tan

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.

I had a trucker's tan after driving for 10 straight hours on a sunny day.

trucker's tan by population361 May 30, 2006

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kidulting

The phenomenon where adults salivate at children's toys

Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!

kidulting by Emotional Cruiser October 12, 2025

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Boffin

British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.

According to the boffins downstairs, the murderer used a serrated blade.

Boffin by Agnon February 11, 2023

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Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.

I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.

Pee Calculus by anorlondo October 1, 2026

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