Streaking Button Pin

This was a flea market find. I thought it was kind of cool. I did not think it was old, but the date on it was 1973, which makes it 38 years old ! It has been around for a while. I remember the streaking craze back then, but never participated !!! I was just wondering where you would "pin" it on if you wore it while "streaking thru" ! lol. Thrifty Gypsy