Maybe a brush?
Having a whole group of new customers walking into your barbershop is generally a pleasant experience. More customers = more money. As most hairstylists will tell you, not all customers are the same, and not all of them are as easy to deal with as you might think.
Unfortunately for this barber, the large group who entered his shop that morning were going to take a lot longer than 45 minutes each to care for. Working on a complete mat of hair isn’t an easy task. I wonder if he gifted them all a brush at the end of the haircut?