One-rail mass-transit, you can find one in Sydney.
"I'm the best monorail-driver ever!"
-Homer Simpson
by w00dy January 20, 2005
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Mono means one and rail means rail.

Sydney's monorail exemplifies excellent town planning, just like the popsicle stick skyscraper, the 50-foot magnifying glass and that escalator to nowhere.
Lyle Lanley: The monorail put Sydney on the map, next to Brockway, Ogdenville, and North Haverbrook.

Sydney: Mono...doh!!!
by santa's little helper April 4, 2012
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for a girl to grind a guy who is laying down, esp. with his penis between her labia minora
I couldn't get her to let me inside, but she did take a ride on the monorail.
by Rod X February 14, 2014
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When an individual is held down against their will whilst an agressor positions his buttocks either side of the poor soul's nose. The "crack" is then rubbed up and down the face in a straight line, mimicing the movement of a monorail.
The group thought it would be funny to take Ed down a peg or too, so they held his arms and legs in order to allow Rhodri to monorail him.
by Benjamin Shrewpert November 28, 2006
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Monorail cat is a popular internet "lolcat" or image macro of a cat laying what is known as "monorail style". This is where the cat will lay with all four paws under his body and head laying on floor. It was so named for its resemblance to the mass transit system, the Monorail. The most comon and most popular monorail cat is a Domestic Longhaired cat laying "monorail style" atop a sliding shower door.
*Monorail cat is offline for maintainance
a caption to a picture of a sleeping kitten laying "monorail style".
*Monorail cat now carries more passengers.
a caption to a picture of a fat cat laying "monorail style"
by melissa* April 3, 2008
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When two guys put the tips of their erect dicks together and one guy strokes both dicks like it is one large dick.
gay man sex is fun when you monorail
by 596A December 11, 2010
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A term to describe the passing around of a drink (usually alcohol) in which everyone's mouth drinks from the same opening. This is very common in situations where people are looking to drink fast and don't have the luxury of cups.

The term is derived from the disease Mononucleosis (mono), otherwise known as "the kissing disease." Which is transferred by saliva from an infected person to the lucky recipient.

Monorail is also taken from other phrases such as "jump on the band wagon." However, this mode of transportation is a one railed train first invented in the early 1900s.

The phrase then is said to cue someone to take a drink, while joking that they going to get mono because another person, or many, have already drank from it.
Can i have a sip?
Sure, hop on the monorail!
by TheJester108 July 30, 2011
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