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a person so cool they make your brain hurt and your pants smell
My cousin is a hahachecker. He once ate a whole pizza in one bite and still had time to text me.
I saw a hahachecker at the mall. He wore socks with sandals and laughed at my bad jokes.
My teacher said I was a hahachecker. I didn't believe her until I got a 100 on a test while eating a donut.