[dirtyroboto]

Onsen/Sento

Pay the fee and then go to the changing room.
Get fully naked and then go into the cleaning area.
Clean yourself very well.
Enjoy the baths.

What is the problem?

I have a really big cock and I never get stared at when in public baths.
I guess all those years at an all boys school prepared me for bathing in japan!
But seriously, I have never had any issues using public baths here.
Get naked and enjoy the baths, good times!