system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Where do slugs come from when it rains?

I've always wondered where slugs come from whenever it rains too much. Even as a kid I'd always wonder cause they move so slow but when it rains you see trails all over like they've been moving for hours, to reach a location they weren't. Where do they come from?
gpt
They hide under stuff when its hot and dry. When its wet they can move easier with their slime and the water and don't get dried out as quickly.   

You dont wait for the hottest time of the day to cross a desert right?