One of our particular family words is "flidge-a-later". When my daughter had her pre-kindergarten interview, one of the questions asked was, "What is the big box in the kitchen that is used to keep food cold?" The school principal later told us he did all he could to keep a straight face, when she looked him square in the eye, and said, "You mean the flidge-a-later?"
Here at the manor, if you happen to do something either outstandingly stupid or mean, not just regular every-day-kind-of-stupid, but something of the brilliantly stupid variety, you are ceremoniously bestowed the prestigious title "Butt in the Hall of Fame". This endearing practice started when the two older kids misunderstood the lyrics of the Munchkin song "Follow the Yellow Brick Road", from The Wizard of Oz, that go something like...
You will be a bust, be a bust, be a bust,
in the Hall of Fame!
At ages three and five, they had no idea what a bust was. It certainly sounded like "butt" to them. Okay, please tell me we're not the only family who has fondly and so willingly adopted silly words into their vocabulary. I would love to know some of yours.