Top Definition
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.
by Brian X June 16, 2007

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×