The most unintentionally hilarious moment EVER!
I cannot, repeat, CANNOT believe nobody on here has posted this...but it happens in the episode 'Go Away Go Ship'. Anyway, Red Beard the pirate captures and forces Shaggy and Scooby to make him "some dinner" and threatens that if it isn't delicious, he'll basically slit their throats with his sword (I know, nice guy). So, we then cut to them in the 'ghost' ship's kitchen stirring up a pot of 'stew' apparently made out of cobwebs, soap and old chains in boiling water....yum! When they serve it to the pirate, he tells them instead "YOU eat it, hehehehahahaha!" so they both quickly gobble it down until they realize that they actually are producing bubbles...and they blow them in Red Beard's face to escape. What makes this scene absolutely hysterical to me, is how he reacts by wiping the bubbles from his eyes...when in turn, it pretty much looks like the pirate is 'getting down' and dancing based on his arm movements, LOL. I'm telling you right now, I haven't laughed that hard at a scene from this show ever since and to this day it cracks me up to see that image of Red Beard getting his groove on with the bubbles, just HILARIOUS! Funniest Scooby-Doo moment EVER! And the brilliant part is , it's unintentional and nobody has mentioned it before but me, LOL. Just epic! Check that episode out to see what I mean...you'll be on the floor man, guaranteed! Agree?
Edit: Here's a photo to show you exactly what I'm talking about. It's just hilarious man!
http://radioactive-studios.com/biohazard-films/files/2014/05/Scooby-Go AwayGhostShip-07-RedbeardDances-e1399612136921.jpg