I wiped out in the concourse once, by tripping over my own shoes and landing on my behind. Nothing like looking like an idiot in front of total strangers.
Look at the bright side! You didn't know those folks and probably never saw them again. Another thing; you gave them a good story to tell folks when they arrived at their destinations, so you were a factor in brightening their day! Of course, when you're in a pile on the floor, that's the last thing going through your mind.;o)