I like that phrase...a roof over our head...and I like all of them...though I don't think they are called idioms. Idioms seem to be more the structural makings in a language. These are simply phrases that last a few years...like maybe 25 years then pass away. We should make a list of them. Maybe you can start for us.
ink rives bfk 11x15
ink rives bfk 11x15
ink rives bfk 11x15
these young guys are getting out of hand...I'm finding them everywhere, unsigned, unfinished, just sitting around eating the food, playing video games, etc. etc. I can't ever remember which I've posted, or put on restriction, or sent outside to leave me alone...