Dolphins and humans are the only known animals that have sex for pleasure.
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!)
Today the government issues "Support our Troops" paraphernalia; however government-issued brochures and videos featured a slightly different slogan during the WWII era – "Don't forget – Put it on before you put it in." During the Second World War, many soldiers returned home with venereal diseases, costing the government millions of dollars in medical expenses.