system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do worms come out from the ground all the time when it rains?
gpt
The simple answer is "because they can" 

Normally a worm near the surface would turn back because it was too dry.

But when it's wet their adventures can bring them to the surface. 

And for every worm who makes it to the surface there's about a hundred more that don't bother. If the rain really chased them upto the surface the ground would be covered in worms, there's a *lot* of them down there! 

So, no, they won't drown when it rains!