Red Foreman was the father figure on That '70s Show, which aired on Fox from 1998 to 2006 and was set in 1970s Wisconsin. Kurtwood Smith played him as a stern Korean War veteran whose catchphrase you dumbass was aimed mostly at his son Eric and the teenagers hanging out in the basement. Clips of the line circulated on meme pages and reaction videos long after the series ended, because the phrase needs no context. It remains a shorthand insult for a foolish decision, instantly understood even by viewers who never watched the show.
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Red Foreman shouting you dumbass from That '70s Show, the classic TV insult used as a reaction sound for stupid mistakes and funny fails online.
This short clip captures Red Foreman delivering his signature insult twice, the second time louder and more exasperated than the first. Played by Kurtwood Smith, Red was the strict, no-nonsense father on That '70s Show, and you dumbass became his go-to line for Eric and his friends whenever they did something foolish. The delivery is blunt, gravelly, and instantly recognizable, with a pause that lets the first insult land before the repeat hits harder. It works because it sounds genuinely annoyed rather than performed, making any dumb moment feel personally called out.
