Sexual act in which male rides female down a flight of stairs while holding onto her hair.
Guy 1: "Hey Jimmy, do you remember when you Matterhorned that girl last year?"

Guy 2: "Yeah, it was totes awesome. She was hard to steer. Wish she took the curves better."
by TWSS12345 May 22, 2010
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A crap that sticks half out of the toilet water, the way the Matterhorn's tip appears when it's pierces through high cloud cover.
My Thanksgiving shit was sticking out of the toilet so far it looked like the Matterhorn on a cloudy day.
by Nagas Lrac December 15, 2010
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The act of sitting between the legs of someone behind you. As if on the Disneyland ride of the same name.
The group of baseball players needed to matterhorn to fit everyone on the broken bench.
by Cory Madsen June 22, 2008
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1. A saying commonly used after one notices interest from the opposite sex. Must be said in either a whisper or strong masculine voice. Usually followed by a fist bump.

2. Derived from the Old Spice Deodorant.
"Dude that chick was totally checking you out."
"What can I say? Matterhorn."

"You smell good. What deodorant are you using?"
"Matterhorn."

GIRL: "Want to exchange numbers?"
GUY: *turns to friend and whispers "Matterhorn."
by zgriffin22 April 15, 2010
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A large crap that sticks half out of the toilet water. It's tip, reminiscent of the actual Matterhorn piercing through low hanging banner clouds.
Dude, the deuce I dropped on Thanksgiving looked so much like the Matterhorn that I could've swore I saw to Swiss climbers scaling a piece of corn on their way to the summit.
by Pants Face December 16, 2010
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A dark turd that is so long it curls up above the water and back down like a long rams horn.
Dude your not going to believe the Dark Matterhorn I laid last night!

What? Niiice! You dog! Who was it some european chick you picked up?

No you dolt!! It was a huge horn like turd I laid in the poop pot!

What? No way?! Dude, next time take a picture!!
by minuccp June 29, 2011
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Lorenzo Von Matterhorn was born in Switzerland in the spring of 1974. He was placed in a basket and tossed into a river immediately following his birth. After traveling downstream for miles, he was found by a young Milanese woman who raised him, naming his Lorenzo after her father, and Von Matterhorn to reflect his Swiss heritage.

Lorenzo was diagnosed with a condition called phallumegally (bigness of penis) at a young age. He grew up unable to ride a bike or feel comfortable in a locker room or a regular pair of shorts. He has applied for penis reduction surgery many times, but the doctors have said that, sadly, that is not an option.

He is the founder of Von Matterhorn Industries International Unlimited Global Inc., or VMIIUGI, and was once named billionaire of the week by Big Business Journal.

See The Lorenzo Von Matterhorn.
By pretending to be Lorenzo Von Matterhorn, Barney managed to convince a woman to sleep with him.
by lilypotter56 July 25, 2012
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