A motion in which you exhale loudly and/or make
dinosaur noises. It should slightly resemble a dragon if you are doing it correctly. You do the fangirl dragon when you see
something incredibly cute and as a result, are
freaking out about how cute it is. Therefore, you do the fangirl dragon.
(You are
watching TV and your favorite couple finally kisses)
(You start flailing your arms and exhaling like a dragon
breathing out fire.)
Mom:
What are you doing?
Fangirl: Fangirl Dragon-ing......and dying of cuteness....