10. Megan Fox and Brian Green
Rumours already swirl that this married celeb couple have an open marriage and are both free to sleep with other people, so we’re guessing that rocking up to a swingers party and going for it together would be even more exciting! Let’s be honest, what man or woman hasn’t had fantasies about Megan Fox ever since that scene in Transformers where she bends over the hood of the car in those tight, tiny denim shorts?

