Brown Line 

The railway that runs alongside the Hershey Highway.

Ooop, I feel a Brown Line Express coming through...

Brown Line by Lady Csyde July 14, 2007

brown line 

The stain left after a wedgie occurs in undershorts. A brown line results if wiping is not sufficient after a bowel movement or a sudden burst of gas is released unexpectedly.

I hope your mom uses Tide to scrub your brown lines out of your underwear.

brown line by DiegoSantiago June 29, 2014

Brown Line Express 

1. A fast-moving, no-stops train on the Brown Line.
2. A gigantic turd that tears your sphincter to shreds on the way out. Often comes without warning. So called because of a faint resemblance to a speeding subway car.

Aw man. I had a Brown Line Express this morning. I looked in the toilet, and it was actually the size of my wrist.

Brown Line Express by Lady Csyde July 14, 2007

thin brown line 

When you think you have sweet fart, but it turns out to be a shart

Hey man I thought had a sweet fart, but when I let it rip it turned out to be a little shit. That's the thin brown line for ya

thin brown line by Ddawg1990 January 21, 2018

Rob brown line 

The biggest line known to man that only rob could consume.

A rob brown line. Bigger than the que for mcdonalds after lockdown

Rob brown line by Robb2020 June 7, 2020

The Brown Line 

How close you can come to shitting yourself, without actually shitting yourself. Usually caused by explosive diarrhea.

I almost crossed the brown line this morning, I Just managed to get my pants down and take a seat before I decorated the Oval Office

The Brown Line by Choppasm April 12, 2023

CTA Brown Line 

Willing to get off at ANY exit in order to stave off impending fecal incontinence.

"Pull into that Moo&Oink! I got the CTA Brown Line goin' on!!! I can't wait!"

CTA Brown Line by Cock Johnson December 7, 2007