i had a sign above my front door when i lived in a house saying
'do not meddle in the affairs of dragons, for you are crunchy and good with ketchup'.
the bumper (basket) sticker on my bike reads;
if you ate today, thank a farmer
on love life.... don't matter where you get your appetite, just make sure to eat at home.
and my all time favourite.... it's far easier to get forgiveness that permission