Being entirely without clothes and completely in the nude.

Wearing absolutely nothing at all. No clothing what so ever.

When you're butt naked in a place or situation where you shouldn't be, you're butt ass naked.

A combination of bare assed and buck naked. Another form is buck ass nekkid. Usually applies to a drunk frat boy types in innocent homo-erotic situations while hard drinking with their buddies.

to be deemed totally naked

Completely naked.

Completely naked without any clothing on. All you can see is your top parts and lower parts and anatomy.