I've never had outrageously horrible service, I'm usually on the end getting screamed at, but there's a restaurant I go to where the waitress goes on and on about stuff I really don't want to hear about while I'm eating. =/

Although now that I think about it, I went to Bubba Gumps for my birthday one year and when I told them it was my birthday the waitress rolled her eyes at me and sighed and stomped off like I was too old to do the whole ice cream and birthday song thing.