tongue flitter 

when a male or female moves their tongue very fast on a clitoris

"ohh.. i love how you tongue flitter that pussy, you dirty boy"

tongue flitter by Daisy Lashes July 18, 2009

flutter tongue 

A technique used when playing the flute. Flutter tonguing requires a flutist to role his/her tongue while playing, producing a gurgling sound effect.

I used flutter tongue while playing "Flight of the Bumblebee!"

flutter tongue by flautist07 December 20, 2010