Some of ours were:
Don't sit there with your teeth in your mouth and your elbow half way up your arm.
Oh dog's hind end.
When someone sneezed "Scat there Tom and get your tail out the gravy bowl"
When one generation leaves another one comes along.
I gonna break your arm and beat you with the bloody end of the stump.
My husband would play fight with the grands and when they would holler OH OH he would tell them I used to have a hound dog that sounded like that.
Living in the mountains we always heard that the cows on the hill had two short legs.
I used to walk to school and it was up hill both ways.
Go ahead and I will make you think twice about doing it.
Go pee up a rope.
I must of put it in a crack where the devil can't find it.
These are just some that pops off of the top of my head at the moment but I know there are more,.