In Florida having sexual relations with a porcupine is illegal.
The iconic "Rabbit" is renowned for two things: excellent results and an odd smiley face on its tip. Women's Health tells us the smiley face was actually a result of conservative Japanese customs. Apparently, Japanese consumers frown upon "the production of sex toys that too closely resemble phalluses," so the smiley face was added.
Bozeman, Montana, has a law that bans all sexual activity between members of the opposite sex in the front yard of a home after sundown-if they're nude. (Apparently, if you wear socks, you're safe from the law!)