So embarrassing

What is more embarrassing? I know my cousin and my sister are both turning 14 this year. My sister's friend or my God-sister also has the same birthdate as my sister but they are a year apart. I just realised that. So, anyway, I gave her 14th birthday card. How embarrassing is that?!!! Learn from this, do not ever give a number birthday card unless you are really sure. Actually, I thought I was so sure that she is turning 14 till they mentioned it. Sigh.. What a dumbhead.