The classic sentence that math geeks have been using for years to remember the order of operations (PEMDAS) is
Please excuse my dear Aunt Sally.
Now, I don't know what Aunt Sally's problem is, but we've been excusing her for a long, long time!
Here's a good sentence that one of my students came up with that I like better:
Pudgy elves may demand a snack!
Can you think of one?