My friend worked retail in christmas time last year. A guy comes into the wally world she's workin at and he has a bag that he's just filling with random junk, just shoving stuff into the bag randomly. She tells him "hey do that shit after I clock out in an hour" and... he does. He sat there confused that she interrupted him. The manager called police and arrested him.
I dunno what happened after that but uh... yeah.