Plural of "Pornality" (see definition).
Pornalities are words or expressions formed by fusing an older saying (usually trite or banal) with a new element to form a new meaning, usually more risque or graphic:
With simple juxtaposition: "What can I do for you?" becomes, "What can I do you for?"
Fusion (sometimes called portmanteau) of two words:
TV's Bart Simpson fused CRAP + FANTASTIC and got CRAPTASTIC.
Said the hooker to the john: "It's a business doing pleasure with you."
Said the john: "And I love the fact that you observe all the Pornalities."