Did you know... Most male giraffes are bisexual? Twelve percent of adults claim to have had sex at work? Half and hour of sexis said to burn between 85 and 200 calories (the equivalent to 15 minutes on a treadmill? Amaze your friends, break the ice at parties and fill awkward silences at job interviews with this collection of weird and wonderful sex facts - everything you ever wanted to know (and some things you didn't) about sex.