Is it just a UK thing?

It is someone's birthday in my office, so apparently the tradition is that when it's your birthday YOU bring in a variety of cakes for the whole office. (today it's 2 boxes of assorted Krispy Kremes, a selection of muffins and flapjacks). I find it kind of strange that you have to buy cakes for other people on YOUR birthday. Buy hey - who am I to argue - I thoroughly enjoyed my ‘maple iced glazed’ doughnut this morning! And yes – I admit it – I come into work every day praying it is someone’s birthday!