Here’s one expression on Yahoo! News that you’ll never get right:
The correct expression is just deserts. The word deserts (which is pronounced like desserts) means “something deserved.” But I guarantee you, that if the writer had used just deserts, some reader would claim it is wrong. Regardless of the spelling you use, someone will think it’s wrong.
The solution: Avoid using this expression. Do not use it. Never, ever write just deserts or just desserts.