Stealing Chips

[Mark1808]

A friend said he saw a guy at another table stealing a drunk guys chips when he was raking in a big pot. A few days later my friend was sitting right next to the thief at a table and when he went to take a bite of food he saw movement towards his chips. He turned around and the guy laughed and tossed the chips back like he was joking. How common is chip stealing? Should you ask the floor man to check the tape if you suspect anything?

The thing is there are a lot of regulars at this casino and people do joke around with taking chips and tossing them back. I would not want to falsely accuse anyone but I also don't want anyone putting their hands on my chips.