OK…..this is one way you DO NOT want to go viral!

A mom was participating in her kid’s “End of School” or “Sports Day” race, and things did not go good!

During the race, she face-planted and ended “butt up” to the crowd. Problem is she was wearing a dress and had a thong on underneath and her dress came up and well, let’s just say she “mooned” the entire crowd!

Yikes! Check out the video below: (VIDEO: YouTube/YardNews)