Blerg: A Questionnaire

A Blerg is a mysterious, otherworldly creature that defies explanation, except for this:

It's a cross between a blorple and a flumplen.
It's a creature of pure, unadulterated chaos.
It can only be seen by those who have consumed an entire can of Blerg-O's cereal.
Its existence is a conspiracy, perpetuated by the Breakfast Cereal Industry.