Coopertastic means everything good with that person or thing. Coopertastic is an adjective that can be used to describe anything that has a good side. When the adjective is used on a person, it means funny, kind, loud, extroverted, outgoing, awesome, amazing, and friendly. When it is used to describe something, it means the best qualities of that thing.
He is coopertastic.
She is so not coopertastic.
My coopertastic grade was an A+.