VIDEO: Poor guy loses his retainer on a Hawaiian zipline

Well this stinks.

Jonny Jacko was having a cracker of a time whizzing down a zipline in Koloa, Hawaii when something happened that brought him right down to earth.

That is, his retainer fitted with a fake tooth fell down to earth, lost forever in the Hawaiian wilderness.

[Via Metro-Goldwyn-Mayer Corp]           

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Like, how do you even respond to that?

There is literally nothing you can do as your slobbery dignity is ripped from your gob.

You're strapped into a harness hurtling away from your missing tooth, helpless to the cruel forces of gravity.

All you can do is accept what life has taken from you and keep on going.

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And even though a well-oiled pulley and the laws of motion meant Jacko literally kept moving on without any effort on his part, he did move forward in a figurative sense.

He posted video of his ill-fated thrill ride to Instagram and became a viral superstar, clocking up more than 60,000 views in just a few days.

And even though he was down a tooth he wasn't down in spirits.

Just look at this beautiful smile:

What a legend.