They do this all the time and it's incredibly rude. Just yesterday a fat, greasy baboon was screaming on her phone while another ape yelled back. That combined with insane "hip hop" ringtones almost pushed me over the edge. I had to go into the break room and take a few deep breaths after that one. It's fine, I told myself. It's fine.
I almost lost it when one of these creatures started yelling at a cashier for no reason. Selfish, entitled animals who just want what THEY want, period. And they NEVER take no for an answer, even when they're completely in the wrong. When I went to lunch I just sat in my car and looked out the window in a daze.