Doc Louis is Little Mac's trainer in Nintendo's Punch-Out boxing series, which began in arcades in 1984 and reached wider fame on the NES in 1987. The line riffs on the famous Hulk warning, you wouldn't like me when I'm angry, recasting the usually supportive coach as the one about to snap. Shared as a short Discord and meme soundboard clip, it survives because the reference is instantly recognisable and the warning fits any moment where someone's patience is clearly running out.
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Doc Louis from Punch-Out delivers a mock Hulk warning in this short voice clip, used for warning jokes, fake threats and dramatic reaction edits online.
This short clip features Doc Louis, the boxing coach from Punch-Out, delivering a mock threatening warning in a deep, serious tone. The line plays on the familiar angry transformation phrase, swapping in Doc to make the threat sound both dramatic and absurd, because the coach is usually encouraging rather than frightening. At just over a second, his delivery lands fast and flat, with the punch coming from the contrast between the grave warning and the character delivering it. Viewers instantly read it as a joke escalation, a sign that a playful situation is about to turn hilariously serious.