An actively aware and ready to scrap attitude and presentation is not considered a weapon and will cut out all but the really serious bullies. If you meet a real threat, at least you will be squared up to fight or knock their ass down on your way away. Consider closing the gap to the threat, throws off their timing.
The idea of snapping a quick cel pic and sending it is a good one as well, especially if your phone is not desirable for theft.
Dead Bears, the only good kind.