A few years ago I went for dinner with a group of friends. I decided to tell them it was my birthday to try to get some free drinks - no free drinks were offered *sadface*. However after we finished our meal the restaurant staff came out with a caterpillar shaped birthday cake (these are a mandatory part of kid's birthday parties here in the UK!), complete with candles and a bunch of balloons! The staff then stood round the table singing happy birthday! It was kind of embarrassing but worth it to get free cake!