The Greatest 'Best Man' Story... Ever

This story is actually touching and tragic at the same time.

A couple in Pennsylvania has a 2-year-old son who unfortunately suffers from a rare terminal illness and time is running out.

Now, mom and dad aren't married yet but say it was important to them that their son saw them get hitched.

They moved their wedding date up to make sure their little one could be apart of it, and the dad even designated him as his best man so he gets to walk down the isle.

(You can read more about the story on CBSPittsburgh.com)

In a weird way, this is one on the best "best man stories" that we've ever heard.

Did you have someone interesting stand up in your wedding? Have any good best man stories?

Leave us your thoughts in the comment section below.