Previously, I came across a unique restaurant in Maine that offered people a free lunch in Sub Rosaexchange for a nude dip in the lake. While naked restaurants just aren't common outside of nudist colonies, there are a few out there that, like Maine's Black Frog Restaurant are okay with an "au naturel" dress code, and the latest one is in Oregon.
The Sub Rosa restaurant serves food and drink with a side of music, and clothing is optional. The trend was initially started by the staff, who found themselves stripping down during a blistering hot day at an outdoor barbeque. It wasn't long before the diners joined in, and since then, it's been a clothing optional place to dine, drink and dance.
The catch is that Sub Rosa is kind of a secret society; with more that takes place online than anywhere else, and typically, cocktails can be had at night by invitation only. So while you might get to dink and dine in the comfort of your own skin, don't hold your breath, because you (yes you who's reading this) probably won't be invited.