Have you ever ACTED on a major fantasy?

Fantasies tend to come in three types; 1)Fantasies we'd easily do, 2)Fantasies we'd have to work up the courage to do and 3) Fantasies that sound hot, but we can't imagine getting the nerve to do. Have you ever crossed into # 2) and 3)? Was it was you imagined it would be? Would you do it again?[Note: You DON'T have to be specific, this is PUBLIC. You can keep the particular details to yourself, it's more the*human* side I'm curious about. If you feel brave enough to share WHAT it was...please remember discretion!]