An illustration imagining the yummy warmness of marshmallows in a glass as a drink, I wanted to depict the irony of how we make ourselves believe we are happy (or sad) by cramming these respective feelings into our brain. And the cherry on top is we feel warm and fuzzy inside, when in reality no one wants to ask the question - does it all matter? 
Well, in this case, the cherry on top is a marshmallow!