Wet, Damp
If a tsunami hits, it's raining, and you're outside trying to use a rake, you're going to be very wet and damp.
Imagine how wet and damp you'd be with tsunami water up to your knees and rain pouring down on your head. You struggle with your rake anyway.
じゅ
ぬ
None
You can't stand how wet and damp you feel in these clothes so you rip them off and rake in the nude (ぬ)!
You're still wet, but at least you don't have the feeling of damp clothes touching your body now. You'll have to be really careful raking in the nude though.