Lights out, TKO
In Boxing, a TKO, or technical knock out, happens when a boxer beats his opponent so badly that the fight ends. In most cases, TKOs happen when referees stop the fight in order to protect a boxer who can no longer defend himself. In some instances, a three knock-down rule is in effect, and the fight is called a technical knock out when a boxer is knocked to the canvas three times. An injury (like a bad cut) can also cause a TKO.
Timberlake uses the term “lights out, TKO” to show just how badly this girl has hurt him. He might not be officially knocked out, but he simply can’t continue the fight. She has either hurt him too many times, or too much for him to recover.
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