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You might grow crystals - The water, minerals, and phosphates in your corpse make the perfect cocktail to create vivianite minerals.

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No more wrinkles - Loss of muscular tension will make your wrinkles fade. Who needs botox when you can just die, right?

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Leather - Your skin can be turned into leather and preserved. Who knows, you might even become a book.

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Your corpse can explode -

Gases produced during decomposition can actually make a corpse explode.

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Post-mortem erection - It is possible for men to have an erection and even ejaculate after death. 

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You can turn into soap - If fat in your body interacts with certain bacteria after your death, your corpse can turn into a sort of wax mummy (the scientific name for it being adipocere).

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Soap -

Tyler Durden in 'Fight Club' was not the first one to come up with the idea of using human fat to make soap. The French also did it in the 19th century.

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Fat as fuel - It might even save our planet, as a plastic surgeon managed to use fat removed in liposuction operations as fuel for his car.

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Your heart is alive - Your heart can actually continue to beat after you die. This is not common, but your stubborn heart might refuse to stop immediately.

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You heart can start beating again - Yes, you can actually come back to life, just like that! It's not as common as we might like, but it happens.

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Back to life - Whether or not you believe in miracles, some people do come back to life after being pronounced dead.

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Consciousness -

Freaky as it sounds, all other parts of your body can shut down, but your brain might remain aware.

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Brain awareness - Survivors frequently recall a number of procedures done to reanimate them. Many of these people end up suffering from post-traumatic stress disorder.

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Putrefaction - The millions of bacteria we have in our bodies start to decompose it.

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This body will self destruct in 3, 2, 1... - The cells in your brain will digest themselves as soon as you die.

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You might poop yourself - The muscles that control the bladder and bowel movements will stop working. Consequently you can poop or pee yourself.

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Organ transplant - If you're listed as an organ donor, you might still feel pain when your organs are removed.

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Nails - Contrary to popular belief, nails do not grow when you die. It may appear that way, but in reality it's just the skin drying out and shrinking, exposing the nails more.

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Hair - The same goes for hair. It doesn't really grow post-mortem. It's all an optical illusion. 

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Livor mortis - Without blood flow, your skin will get discolored, somewhat purple, and patches will appear.

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Postmortem movement - As all the processes in your body shut down your corpse can still twitch and have spasms.

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Sounds -

Gas in your corpse can produce sounds. Moans, groans, and squeaks can sometime be heard.

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Algor mortis - Your body temperature drops approximately  1.6 °F (0.83°C) per hour after death. Your body then remains at room temperature.

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Tache noir -

The cornea will eventually dry and black patches will form in the eyes. These look like triangle-shaped hemorrhages.

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Putrid smell -

As bacteria starts to decompose the body they release very foul-smelling gases. Your dead body will eventually stink.

See also: The leading causes of death around the world.

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