Dehydrated Ryanair out of on-flight drinks?

So I was trying to book a flight between Grenoble and Dublin, their booking system failed and this is the error message I got:

I guess we passengers are supposed to die of thirst over the course of the flight.

I mean come on, it’s already bad enough we cant bring liquids onboard  but this sounds ridiculous 😉

Then again, the flight is only 80 minutes…

Either way, I wonder who in their right mind would program a function called “_dehydrate” into a flight booking system.

If someone has an explanation for this, feel free to comment! 🙂