A fart that that sounds kind of like the raspberry fart sound you do with your mouth . It is characterized by a loud blast beginning that quickly tapers off,getting quiter till its gone.
I ripped a double-flutterblast in the fartfest last night.
by Shaun Kernahan March 20, 2006
A long, powerful fart that causes farter's cheeks to smack against each other.
Next time you have a flutter-blast to cut, please point your ass away from me.
by maninboulder August 27, 2005