You know the speed of light; so what is the speed of dark?
You know that moment when you get up in the morning, you're full of energy and you can't wait to get to work? Me neither!
If you know how many cupcakes I'm holding behind my back I'll give you both of them.
You know you're a mom when you understand why mama bear's porridge was cold.
I know that Einstein's theory of relativity is correct because every weekend goes by twice as fast as normal.
I know my limits. I don't always obey them, but I know them.
You already know something you don't even know that you know.
You know the potholes on a road are bad when they assign lifeguards to them, in case anybody falls inside.
I don't know how to act my age because I've never been this old before.
Kids, I don't know if our ceiling is the best ceiling... but it's definitely up there.
I just found out it takes 5 sheep to make one wool sweater. I didn't even know they knew how to knit.
After many years of studying my Geography book I finally know by heart that Australia is on page 23.
I can win an argument on any topic, against any opponent. People know this, and steer clear of me at parties. Often, as a sign of their great respect, they don't even invite me.
You can talk to yourself and you can answer yourself, but if feel the need to pardon yourself, that's when you know something's wrong.
Me: "I need help around here!" Then me again "No, not like that, here I'll do it."
