I work a fast food cashier job (20 year old traveler, just paying the bills) in Leeds. I am from North America (canada), and I talk with a Canadian accent. Whenever I take orders from younger English girls (13-18 yr olds) they usually hold back laughter and burst out laughing when I go get their food. Then, as they leave, they say BYE really loudly and keep laughing. This has happened numerous times, and I am a little annoyed, because nothing I've said is funny, and they weren't laughing before I took their order.