Me being Catalan, a culture with many poop related phrases and traditions, I'm pretty fond of "when shit hit the fan"

"half assed" was quite funny

"Thank you for having me"

It's weird

These kids run through the house like shit through a goose.

"When you mess with the bull, you get the horns."

+1 for it's raining cats and dogs

But also

that's the way the cookie crumbles is just adorable
dinkin flicka just rolls off the tongue
bite the bullet is so raw and literal and
Bob's your uncle is just... No. Who the fuck is Bob 😂

"Fleshed out" just means to explain & expand upon.

"multiple ways to skin a cat"

Like a fart in a skillet.

From the Appalachian region of the US, I bring you:
"I'll cut the blood out of you!"
and more generally within the US (I think?):
"I'll clean your clock!"

Both are threatening a fight, one a little more graphically than the other. I don't think I've heard either in a very long time, and it was only ever from my grandmother that I'd heard the first phrase. Not directly, as in discussing idioms.

for some reason the nword is stuck in my head and popped up instantly when I read this

-_-

I don't know why

I guess because it's tabboo