Cuck-Tus
Someone who gets turned on watching their significant other have uncomfortable and/ or brutal sexual relations with other(s) involving the use of cactuses.
Person 1: You've been in high spirits today. What did you and your misses do on the weekend?
Person 2: It was my birthday so my wife put together a Cucktus show for my viewing pleasure as a gift.
Organised beautifully, it was the perfect blend of bondage and blood play.