When you're a tween stuck with your family in Disneyland in Cars Land and you seriously need to nut, so you stick your meaty-ass, prepubescent dick inside Mater's rusty old exhaust pipe, and he makes nut so fast that your mum almost doesn't catch you with your dick out in Disneyland.
John had a Mater Nut in last summer in Disneyland. He said it was the perfect nut.
by Thicc Hiccup February 6, 2019
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