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when your gagging gets so bad it turns into a full-blown gagatrondra, like your stomach is trying to escape.
I ate six tacos and now I'm doing the gagatrondra dance.
My coworker drank a whole bottle of lemon juice. He's in the middle of a gagatrondra.
I laughed so hard at my dog's face that I did a gagatrondra in the middle of the street.