Two students talk: "What are you reading?" "Quantum physics theory book." "But why are you reading it upside-down?" "It makes no difference anyway."

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Yo' Mama is so stupid, she saw a "Wet Floor" sign and did what it said.

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Yo mamma so stupid she locked herself out of her motercycle.

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Yo mama so stupid someone said Christmas was around the corner and she went looking for it.

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Yo mama is so dumb she stuck a battery up her butt and said, "I got energy!"

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