I like how the idea of it being a "bath" suddenly shifts their reaction, as though the water can't still dissolve them if it's perceived as something "easy".
It's an interesting phenomenon with yukkuri -- there's debate over the fact that, 'as long as it's a bath,' they don't dissolve.
If they're uneasy in the water, they dissolve.
So, there's a thought to, 'all yukkuri are waterproof as long as they believe they are taking a bath'
mister physics still bullies yus, no matter what they think is happening. Yus also think puffing will scare humans. "power of belief" only goes so far.
Edit: I would agree fear would speed up the process, but happiness wouldn't prevent dissolution.
Japanese has different letter for water (水) and hot water (湯). I've seen anime characters who have hydrophobia, but is fine when they realize it's hot water and not just water ^^;;;
Of course, bath (風呂) is yet another character.
Updated
Yunya!
Mishter water can'ch chake it eajy!All righch noje!
It'sh mishter bath nanoje!Yuyu?
Why ish it getting warm-warm?Mishter bath can chake it eajy!Help!
Mwommie!Shtop it!