Fun well here is a thought

Fun is complete submission and trust.
Fun is complete control of yourself and your mate.
Fun is commiting a infraction knowing that punishment awaits.
Fun is satisfying this compultion for punishment.
Fun is satisfying the sexual desires.
Fun is prolonging the satisfying of sexual desires.
Fun is knowing your place and respecting yourself as such.
Fun is complete when you and your partner is happy and satisfied.