How do you get past the thirsty guards in Pokemon Red?

There are actually no "thirsty guards" in Pokemon Red. There are some guards that are very specific to what they let through, but they don't require you to quench their thirst!

It sounds like you might be thinking of a different Pokemon game or perhaps a fan-made modification. Can you tell me more about the context of the "thirsty guards" you're asking about?

For example:

* What location in the game are they in?

* What do they look like?

* What do they say?

With more details, I can help you figure out what you're trying to remember!