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When you're walking along and you suddenly let go of every muscle in your body, making it look like you died instantly. Works best next to a pool or on the beach.
Watch me walk along the edge of this pool, I'm gonna instadeath into it.
by GGK78 May 16, 2013
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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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Damn this coffee is strong enough to cause instadeath.
by Sara Snider October 11, 2007
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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