Bedtime warning

So every night at bedtime, I always give my son a 10 minute heads up to let him know it's time to start winding down and cleaning up.
Last night was no different. Except, when he it came time for the 10 minutes to be up, he started whining and fussing. I told him, "I gave you your warning, now it's time for bedtime."
He looks at me and says "Mommy, can I give my warning back?"