up flat down

term for a type of snowboarding jib that slants upward to a flat part and then slants downward again. exellent for showing off your skills.
"Dude, I totally nailed my backside 540 on that up flat down box."
by boardsport7 January 27, 2008
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Flat Up

A combination a “straight up” and “flat out”. It’s more powerful.
He flat up lied for us.
by Barbara_Bangkok May 28, 2022
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