system
Given the following post, respond as if you're commenting on Reddit:
human
[Gremlins] If you give a Mogwai food after midnight it becomes the gremlin thing, and if you get a Mogwai wet it multiplies. So with that logic, what happens if you give a Mogwai soup after midnight?
gpt
Fact is that "Gremlins" were one of these fads that came and went in the 1980s, like pet turtles after the teenage mutant ninja turtles comic book explosion. Just like TMNT the movie exaggerated their natural attributes to make a better film. You still find them occasionally living in the wild, even though the import ban has been in place for more than 15 years. most though were picked off a long time ago by stray cats or foxes, little buggers don't do well by themselves. 

For those that don't remember them (too many damn kids around these days) gremlins were cute little biped creatures that stumbled around making squeaky noises. Poor little fuckers though, they had been bred from whatever their natural species was with such speed and focus on "cuteness" that it had left some pretty bad genetic abnormalities, just like Labradors and hip dysplasia.

One of their weirdest aspects was that they had very impressive parthenogenesis - the ability to breed without members of the other sex. In fact just getting them wet would often stimulate their breeding cycle. They must have come from somewhere arid with a drought/flood cycle and only bred in the floor season. Get em wet and practically the next day they would be having babies. 

The other aspect almost certainly came from forced inbreeding. They required very little food, again probably due to their original habitat meaning they went without food for long periods of time. Overfeeding would cause their fur to fall out and they got violent and would bite. Not much of a problem, a good boot to the head would kill one but still, weird and upsetting for a kid who just wanted their pet to have enough to eat. 

Still, these traits were enough to be exaggerated into two excellent movies and now that they are so uncommon people have half forgotten where it all come from. 

Back to your original question - sexual reproduction was stimulated by wet fur so if the Gremlins hadn't eaten that day then maybe nothing, if they had eaten too much then you'd get naked angry gremlins chewing your ankles.