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A Jacky Sac is when a brain-dead donkey messes up the word Hacky Sack so bad it makes your eyes bleed.
My homie texted me 'I'm playing Jacky Sac today' and I said, 'Bro, you're not even playing the game.'
My teacher called it Jacky Sac on the board and I laughed so hard I spilled my juice.
My cousin's Instagram bio says 'Jacky Sac enthusiast' and I think he’s lying.