"Nudists aren't clothed minded"
Enjoy Life Naturally
"If God had meant for us to go naked, we would have been born that way."
"Be a nudist and see more of your friends."
Read all of them here: Nudist Slogans We Have Seen and Heard
And as long as we're on the topic of stereotyping and silly stuff, here's a few sources of (mostly) tasteless nudist humor. Hey, if everyone else can laugh at us, can't we?