Petey pan coming from the J. M. Barrie novel Peter pan.
Parashootin as in parashooting.
Invisible as in not visible.
Mothafuckin as in a pastime with your mother thats probably illegal.
Brought together it means nothing in particular except an empahsisation of someone or something.
Person A: Who broke your kite?
Person B: Your petey pan parashootin mothafuckin self broke my bitch storming kite. Thats who.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!