Gooey Gum used to be a earthpony that collected gems around Equestria and sell them for a lot of bits. But there was one gem she needed to get her hooves on, if she want to have her collection completed.

The only way she could get this gem is to get inside a goo pony stomach. As soon as she gets inside the stomach, she need to quickly find the gem before the goo pony absorp her.

It's way too risky to do, but it must be done! So the mare left Ponyvile and ran straight into the everfree forest with a large bag for the big gem... Of course, much like the other two mares who wonder in the Everfree Forest. The earthpony didn't make it out, and no pony seen her since...

UNTIL one day, somepony found a large bag hanging from a tree. What came from behind the tree was unexpected... A blue goo pony giggle to herself before saying..."Hey there, wanna hug me? I promise you won't regret it~"

(The big pink gem in the goo pony stomach is what keeps the goo pony body from melting into a big puddle of goo. Removing the gem won't kill them, but it will take a while for the goo pony body to return back to normal)