Quiznos Burglary

So I saw firsthand a form of shoplifting. I was at Quiznos during the busy lunch hour, and I watched a girl walk in an steal coke. I did nothing

She walked in with her McDonalds cup, marched up to the soda machine and filled her cup with ice. Then she proceeded to fill it with Mr Pibb then leave the resturant.

The very next person to come in the door was a man who did the exact same thing. But this guy washed out his cup first, took a napkin and wiped it down before engaging in the Quiznos Burglary.

Should I be upset? Should I do anything? Should I get my own cup of Coke tomorrow afternoon? What do you think?