Make a big scene about it, saying "The poor little squirrel! It was so young!".
You try to ignore it but just have to say "How sad. Poor little guy."
Say "Thats too bad." and keep walking.
Give him the evil eye and get a napkin to wipe off the bits.
Sigh and tell a teacher you need to get extra clothes from your locker.
Say "Oh, how could you! This was 50 dollars!". More like 5 dollars, but no one needs to know.
Be happy. At least you even got a part in the play.
Complain to the drama teacher, saying you must get the part.
Oh well, better luck next time.
Say "How could you?" and run crying to the bathroom.
Walk past them, making it clear that you overheard.
Walk away. You can always find a new best friend.
Try suggesting movies that you both want to see.
Complain and whine, saying that you were dying to see that movie.
Try protesting a bit, but finally give in to watching the movie your friend wants to see.
Throw a big fit about privacy in your room and stealing.
Hey, she didn't ruin it or anything. Just ask to have it back.
Tell her "Excuse me, but this is mine!" and rip the bottle from her hands.