I was being dumb and reckless on an early spring century this year and rode through a flooded section of paved trail with moving water. At the deepest it was WELL over the bottom bracket!! Probably halfway to my knee. I made it through, thought "That was stupid" and looked down there trail to see more flooded sections.
I turned around and waded back through the section I just came, which was harder because now I had all the surface area of my legs and bike, wow that water is strong!!
Got back to dry trail, sat down and wrung out my socks and boots. Lucky for me it had hit the high of 60° and sunny, as I still had 50 miles left.
Took it to the bike shop to pull the BB out the next day, casually mentioned what I did and we all had a chuckle. Then the mechanic popped out the BB and water dumped everywhere
That's when the laughter really started!