From my daddy:
"Go ask your mother"
"Because I said so, that's why"
"Don't make me stop this car!"
"Anything is worth doing is worth doing right"
"What do you think I am, a bank?"
From my mama:
"Go ask your father"
"Have fun and be safe!"
(as I got older it became:"If you can't be good be good at it!" (although she clearly stated to me that she was joking and she meant "Have fun and be safe")
"Just wait till your father gets home"
"Don't forget to call me when you get there"