Since its inception, the aisles of Goodwill thrift stores have always been filled with some amazingly bizarre finds. Just look at this titty teacup.
only at goodwill...
Back in 2013, Tumblr user Iguanamouth found an expired "grow in water" toy, and decided to put the egg in water, you know, for science.

As a true scientific professional, Iguanamouth documented the stages of the egg in the water, and by the 9 hour mark a crack began to form in the egg.

Time moved slowly forward, but by the 23 hour mark things went terribly, terribly wrong.

Iguanamouth couldn't wait any longer, and freed the monstrosity from its eggshell prison.

Looking down at the half baby/half demon Iguanamouth birthed, we must ask ourselves "Has science gone too far?"
Iguanamouth's post resurface recently after it was shared on Twitter and people were reasonably horrified.
@FizzySodaWave WHAT IN FRESH HELL—
Surely god in heaven above could not have created such a beast.
@FizzySodaWave @melbsonmymind Sprays it with holy water THE POWER OF CHRIST COMPELLS YOU
*Immediately Googles how to unsee things*
@FizzySodaWave put it back
As if the egg baby wasn't terrifying enough, it turns out Iguanamouth never destroyed the abomination.
"Listen, it's still somewhere in the house, but I don't know where," Iguanamouth told Buzzfeed.
So it's safe to say, if Iguanamouth ever goes missing at least we know the prime suspect.

In the wise words of Mike Wazowski...
CORRECTION
Iguanamouth first hatched the egg baby in 2013. A previous version of this post stated it was hatched recently.