-Going into complete ninja mode and pushing the girl away
-Screaming, "Stay away from me you freak!" and then running away
-Seek revenge and start to pull her pants down
-Informing her that her action was totally inappropriate
Sadly I didn't do any of these, and instead THANKED the creepy skirt pulling down girl for her help and walked away.
So to all you sisters at BYU-I y'all best be watching your skirts