It's always good to have a sense of humor about things that are truly a joke at this point, and so for Betty White's 90th birthday celebration, President Obama sent her a very special message.

Here's what he wrote:

Dear Betty,

You look so fantastic and full of energy. I can't believe you're 90 years old. In fact, I don't believe it. That's why I'm writing to ask if you will be willing to produce a copy of your long form birth certificate. Thanks, and Happy Birthday, no matter how old you are.

Ah, it was truly a golden moment.