A joke-orgasm, when finished having this joke orgasm you inform your partner you were just joking.
Chick-"Oh god, Oh god, OOOHHHHH GGGGOOOODDD!!! Just kidding, that was faked."
Guy-"Oh ha ha you and your jorgasm! What a jokester."
When a joke is so funny that the physical response is akin to that of an orgasm. Usually paired with words like "oh, oh God! Yes!"
"Oh God! That joke was so funny I just jorgasmed (in my pants)!"