Yo mama so fat that she broke the chair by sitting on it.
Yo Mama So Fat
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Explanation
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Explain Bear
Listen up, buttercup! This "yo mama" joke is all about exaggerating how fat yo mama is. Like, she's so heavy, she busted a chair just by plopping her big ol' self down. It's funny because it's a ridiculous image. You know, like your mom is probably fat.