A condition when a person's act becomes tedious, stale, monotonous and boring. As a result, no one will pay attention to him anymore. Much like the dog who wagged his tail so much that it fell off!
"Valkyre" would have been a great movie if that wagged out Scientologist hadn't played the main role!

Travolta is so wagged out on Dianetics that he played "Edna" in the remake of "Hairspray."

Jerry Lewis should have retired before he wagged out on us.
by Stefonamus September 9, 2010
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When someone is acting crazy or going insane.
My mom is wagging out so I can’t hang out tonight.
by Ro-Ro-Ro July 12, 2020
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