Comprised of the words "monster" and "enormous" with a slight interjection of "saur" as in dinosaur. Can be used in both positive and negative connotations.
Positive Connotation: That girl has monstosaurous boobs.
Negative Connotation: That guy has monstosaurous boobs.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failure shower.