I was on a bus for like two hours with severe diarrhea that was trying so hard to come out of my ass, that I thought God himself was helping it. I looked awkward, face red, legs crossed, body straightened out across the seats, trembling. People probably thought I was a goddamn weirdo. But I made it. I don't know how, but it was one of the hardest (and most painful) times in my life. Not a spot on my boxers. So can you explain to me how the hell you couldn't hold your shit in, when I'm sure there was a bathroom close by? If your story is even true, that is.
While the TS's story made me laugh out loud, it's completely fictional.
In regards to your question, allow me to answer. There is a difference between shitting your pants in the traditional style, and the elusive shart. Typically, the only people that shit their breeches are babies and seniors. Perhaps the occasional war veteran with a malfunctioning colonoscopy bag. While commonly occurring in the demographics noted, most functioning humans do not shit themselves while they're in control of their own bowels. That is without taking in the wildcard variable known as the shart. The shart can and will strike at any time, creeping up unsuspected by the victim, before suddenly popping out of a person's corn-hole, like a dart from a blow gun.
The shart is deceptive and illusive, attacking when least expected. You're on a sushi date and had a beer before heading out, to help loosen up. Five California rolls later, you're chuckling at a joke you just made, using laughter to lean to the side and camouflage a fart. But wait! A little something
extra slid out with your mirth. And you cannot resist the involuntary clenching of your gluts, only to feel a warmth squeeze it's way up and down your great divide. The repulsive odor of excrement hits, and you immediately ascertain it wasn't a simple silent but violent. Rather, you know deep in your heart, that it was a shart.
And that is how the shart pops up on a grown man! One simply cannot predict when and how the shart will attack. Even on your highest alert, a shart can still cripple you when you least expect it.
My advice to you would be to never belittle a man that was ruthlessly assaulted by a shart. Else, you could be next.