We can all imagine what it would be like to meet a famous person you have obsessed about pretty much forever.
It would be hard to contain your massive pile of emotions when you actually try to talk to them, what do you say? How would you react?
Well, Mary met former Vice President of the United States, Joe Biden yesterday during his visit to Mayo and took the Twitter to share her freak out.
It definitely made us smile this morning.
It does seem that the former US president had a massive effect on Mary and it's too cute.
The live-tweets continued...
And best yet, she managed to get a selfie with the man himself.
Now it's her new profile picture.
We just love this story.
Have you ever met anyone famous?