What Am I Doing?

Kim Dong Uk: What am I doing? What is this called?
(as he quickly bends and releases his middle finger using his thumb)
Britne: Flick.
KDU: Flick? So, I'm Flick-ing?
Britne: Yes, that is a flick, so you are flicking.
KDU:  Okay.

Britne:  ???

...later that day...

KDU: Okay class, lets play the memory game with a partner. Say your vocabulary words and take turns adding more words.... Oh, if your partner forgets a word, please flick them in the forehead.

hahaha! Oh, Korea! God love ya!