You can either keep peddling, get off the bike or fall over.
It's easier to knock on a door that's not shut all the way.
Shortcuts aren't always.
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.
It feels a lot colder when you're shoveling snow than when you're building a snow fort.
Nobody notices it when your zipper is up, but everyone notices when it's down.