Wild and Weird Worms

Okay farm fans, here’s the trough full of water after it rains…

And here’s the question:
How does the earthworm get in there?
Seriously, every time it rains, I find earthworms in the feed troughs. I understand they’re coming up out of the soggy ground to get some air, but how in the world do they manage to crawl up the slick sloped plastic sides of the water trough and end up in the water there?

However they manage it, they can’t seem to get back out of the trough and it’s full of water. I reckon it correlates to “Out of the frying pan and into the fire,” only it’s “Out of the mud and into the water.”

All of which equals one dead worm.