If you wait until you're really sure, you'll never take off the training wheels.
Ten minutes is short if it's a recess and long if it's a punishment.
You can either keep peddling, get off the bike or fall over.
It feels a lot colder when you're shoveling snow than when you're building a snow fort.
It's not enough to be able to spell "magnificence" in your bedroom. You have to be able to spell it at the microphone during the spelling bee.
One thing you can't pretend to be is funny.