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1.
A detour that is not "shorter", but is always more fun and usually involves dirt and catching air in vehicles not intended to catch air; a slightly more xtreme level of off roading
Craig: Dude you missed the turnoff to go home

Garrett: Chill man I'm taking the fun cut

Craig: WTF ARE YOU DOING ON THE DIRT

Craig: HOLY SHIT STAR....... we just caught air.

Garrett: told ya it'd be a fun cut.
by B1GR3D1 July 16, 2008
 
2.
A detour that may not be faster but is always the funner route; usually involving an extreme form of off-roading and catching air in vehicles otherwise not meant to catch air.
Swartz: Dude you just missed the turn to go home

Red: Nah, I'm takin the fun cut

Swartz: Dude this is barely a road

Red: yeah i know

Swartz: DUDE UR GONNA HIT THAT BUMP!

Red watch this.

Swartz: YOU BASTARD!
(air time)

Swartz: OH, Shit star we just caught air

Red: told ya it'd be a fun cut
by B1GR3D1 July 29, 2008
 
3.
A more entertaining way to accomplish a task that could alternatively be reached in a shorter or quicker way.
Joe wanted to take the highway shortcut to the pub, but we decided to take the ferry funcut instead.
by mdhare October 01, 2007