but many folks have trouble figuring out what to write in a birthday card other than the obvious 'happy birthday' phrase. Thankfully, finding the right birthday card messages is a piece of cake!

Are your birthday cards looking a bit bare? Look no further (Picture: Getty) Ever found yourself wanting to wish your friends or colleagues a happy birthday ... such as German, Danish, and Polish ...

Charlie shows Lena a birthday card ... in German by heart, and sing it to their classmates on their birthdays. Invite pupils who speak other languages to share how they wish someone 'happy birthday'.