It was such a popular tourist spot that there was a saxophonist and keyboard player belting out tunes and people were lining up for their special shakes.
We shared one and still couldn't finish it but not because it wasn't delicious - it was. At first you sort of feel like you're sucking a lemon but after a while the sweet and sour mix kicks in and it is kind of like heaven. Mmmm.
But again, it was really something special. Key lime pies are just like cheesecakes. They are really sour but topped with either cream or meringue to make them sweet. To die for. Just don't tell our mums!
Next stop: How come in WalMart the family sized bags of chips are big enough to use as rubbish sacks?
Check out more photos from my trip in my Flickr album.
Find out about the United States.
Read more of Kelly's blogs.
