The clip Real detectives from Scooby Doo 2: Monsters Unleashed (2004)
I guess, looking back, every time they made a plan, we did screw it up somehow.
I just never noticed before.
There's gotta be some way we can prove that we actually belong in the gang.
We've gotta do something totally unlike us.
You know, Scoob...
...we could act like real detectives!
Scooby-Doo, raise your right paw. No, your right paw. Your other paw.
Repeat after me. From this day forward we will no longer be our goofy selves.
We will be awesome detectives.
And we will act more like Fred and Velma and Daphne.
We will be terrific and fantastic and spectacular...
...and cease to be "loser-iffic," "lame-tastic" and "suck-tacular. "