Free Happy Hippo Kratom

I have absolutely no clue what this free Happy Hippo Kratom is. What is Kratom? What is happiness, an elusive feeling to me these days? Are hippos even real?!

They're listed as “for adults 21+” on their website, which is even more confusing given then mascot and color scheme.

There should also be no shipping or handling fee whatsoever, so please let me know in the comments if they add one later on.