Jouissance is the French word for orgasm. I think that it is so beautiful. So much more beautiful than the English. It always has to be said with a smile, maybe even raised eyebrows, flushed cheeks. The 'S' sound occurs twice there, making the mouth form in such a way. I love the French J.

Je... oui... sense!
J'oui! Sensational!

A jouisseur(euse) is one who seeks material or sensual pleasure.