A form of cultural decay whereby the standards of public attire become less and less formal, leading to peoplethinking it normal and acceptable to wear pajamas in contexts where doing so has been traditionally considered taboo
"Walmart is a great place to bear witness to the pajamification of American society."
What a horny stud from Merry Olde England will likely face if he frequently has unprotected sex with a female of child-bearing age.
It's well known dat both Prince Charles and Lady Diana "got some cheesecake on da side", but I'm not sure if there were any pramifications --- i.e., da pitter-patter of little feet --- as a result of said philanderings.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.