The term Plug and Play is most associated with Microsoft, who started using it in reference to their Windows 95 product. Other operating systems (OSs), such as Mac OS, had already supported such features for some time (under various names), but the term gradually became universal over time. At the time of its initial offering by Microsoft, it was criticized by some as not being "proven" technology, which did not always work as it should. Detractors at the time of the earliest offering spoofed the functionality as "plug and pray" because "one never knew if in fact the thing would work."
"I sure hope this new wireless mouse works. I guess I'll just plug and pray"