It probably doesn't translate very well. But my grandfather always said something like "If you don't behave I'll put your head between your two ears" and us kids would always giggle and say that it was already the case. I often use that phrase now.

Those who run don't see it, those who love don't mind it.

"Aki szalad nem látja, aki szeret nem bánja."

Basically strangers don't matter, your flaws wouldn't stick out to them. And your loved ones will accept you as you are.

My gram used to quote MAD Magazine and Cracked with me all the time so that was pretty amazing. <3

“[Life is] only once around. Travel while you’re young.” -Grandma Violet

"An old Indian taught me that." (Idk where I learned this)

"And we're off like a turd-of-hurdles/smelly underwear." (Underway)

"Oh, I know it!" (I agree whole-heartedly)

"(That's) big noise." (Nonsense)

"Slicker than dog snot!" (The bee's knees)

Dumb mistakes are called boners and all the kids and grandkids snicker

Good gravy!

"It's colder than Christmas". For reference I live in TX, so it doesn't take much for it to be colder than Christmas (it's not uncommon for Christmas to be in the 80s F).

Judas Priest

Not a catch phrase, but one day my grandfather showed up at the house unannounced asking me to bury his pet cat that had recently died in my back yard.