Comedian Dave Gorman had an episode on this topic in his (excellent, go and watch it now) show, “Modern Life is Goodish” recently. Based on one he’d found, he labelled them “catphrases”. He found in the wild:
It’s a doggy dog world
Like a bowl in a china shop*
Escape goat
Right from the gecko
*Some people were using this to mean what it appears to mean - boring, mundane, unexceptional. Which is quite the reverse from the original.