Time to call Social Services?

I found this glass in a trashcan at one of the castles on Okinawa. Whoever threw it away clearly had no idea what a treasure they had. I submitted this photo to http://www.engrish.com. I think they made a mousepad out of it.
Hmmmm…

Before a shower, before bed, before sex…can I undress, can I not undress? I’m always in a quandary…
(This sign was on a ferry from Okinawa. Your guess is as good as mine. No nude sunbathing, perhaps?)