Traditional saying expressing a widely- accepted truth
A traditional saying expressing a widely-accepted truth?
Conventional wisdom?
You could work this one around to mean the above:
SOME PEOPLE DON'T BELIEVE FAT MEAT'S GREASY - Skepticism to the extreme. Doesn't believe what is obvious. Tennessee, African American man in his 20s. Pigeon Forge, Tenn. January 2006.
"Common sense" is a widely used expression meaning "what everyone knows". Pamela