A clip from Season 1, episode 23 of The Flintstones.\r
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This episode is called The Astra Nuts. Fred and Barney manage to join the army by mistake. As you might imagine, Wilma and Betty arent happy so after the men have left, Wilma says How do they always manage to bollocks things up, Betty?, Practice, I guess answers Betty.\r
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This is funny because Wilma was asking a rhetorical question but Betty answered anyway. You may also find it funny because Wilma says bollocks. GROW UP!