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Children born in the 1980s, listen up.

Remember "Mike Tyson's Punch-Out!!" on the orginal Nintendo Entertainment System? Remember how each opponent got increasingly more difficult to defeat as you traversed your way through the rankings as "Little Mac?"

Opportunities to land a blow, be it a simple jab or a power punch, were fewer and farther between as you worked your way up to the ultimate boss — Iron Mike himself. It's been 29 years since it first came out, but gamers are still fascinated by the title. So much so that a Redditor recently unearthed an Easter egg, a visual clue, that tips you off as to when to throw a knockout punch against two of the game's tougher foes, Piston Honda and Bald Bull.

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