Girl who sits next to me in choir: Hey, can I see your sheet of music for a minute?
Me: *shows her the sheet*
Girl: Ok, thanks!
(we both stare at it while her hands have a mini-seizure)
Girl: *flips the bird at my paper*
Me:
Girl:
Me:
Girl:
Me: HAHAHAHA? *laughs confusedly*
Girl: GAHAHAHAHAHAHA!
Me: HAHAHAHA-
Me: o_O ....WAIT WHAT DO YOU THINK YOU ARE DOING
Girl: OOPS I was trying to make scissors 
Me: WHAT WHY WHAT WHAT WHAT HOW COULD YOU? *blubbers*
Gir: *blubbers about scissors*
Choir teacher: Ladies, please quiet down. I know that today is friday and that it's always very exciting but- *glances at us* -we need to get back to doing music.