Top Definition
Of good quality; awesome; not janky; superior; resistant to negative comments or bad standing.
Boy: "Let's go make out."
Girl: "A jankproof idea."

Girl 1: "This new band is jankproof!"
Girl 2: "I couldn't agree more. it's great!"

Man: "Jose, your test scores are totally jankproof. All that studying paid off."
by Noctehm January 22, 2013

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