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."
7π 2π
When a bubbly liquid, like soda, goes flat
"I hate buying 2L bottles of coke, they always flat up quickly"
A combination a βstraight upβ and βflat outβ. Itβs more powerful.