When Laugh-In popularized this phrase it became ubiquitous.
Everybody was using it, even a President of the US. Yep, ol’
sourpuss himself, Richard Nixon got in on the act.
The Betty Crocker company decided to appropriate it also and included a recipe on the back of their butter cake mixes and named it that.
Leave it to commerce to leave no stone unturned to make a buck.
I’m surprised Rowan and Martin didn’t sue them just for the publicity. But it was a less litigious time back then.