I watched a Gilmore Girls episode a few days ago where they discussed the plural of ‘cul-de-sac‘. Lorelei didn‘t want to accept that the plural was ‘culs-de-sac‘ and said that it was stupid, that it should be called ‘cul-de-sacs‘. Today, I stumbled upon this in Sixteens Summer:
“Our houses hide like turtles‘ nests on twisty cul-de-sacs and overgrown dead ends off Highway 80.”
Now I need to look up the correct plural form.