If you’ve walked around a big beauty store when it’s busy, you may have experienced the chaos that employees face daily. They often have to deal with annoying issues, from returns of expired products to people using unsanitized testers and “Sephora babies” raiding the store for Drunk Elephant skin care.

HuffPost spoke to three past and current employees who work in big beauty retailers about the worst, and they shared the most entitled things customers do in stores. Are you guilty of these offenses?

The Most Entitled “I Can’t Believe They Just Did That” Behavior

Often, customers think it’s OK to open products not marked as testers to try them on, but that’s not the worst employees have to deal with.

“I once watched a 40-plus-year-old woman squeeze a tube of foundation out onto the display and smear it around like she was finger painting in art class. I was stunned,” said Sophia Burow, who worked at a beauty retailer for three years.