Write it inside <pre>...</pre> tags and make the sentence really long so whatever you're trying to hide falls off the right edge of the internet. Nobody will ever find it there (or, see Markup in the Monastery).

Alternately:

• In the cookie jar.
• In a magnetic keyholder in the mailbox.
• Out on the back 40, under the 4th pole from the west end.

You can put it there (for any selected value of "there") between executions...