Trying to I.D. a Be Cool Episode/Scene

[SammyTheShrimp]

There's an Episode of Be Cool Scoob where the gang is in trouble for doing something and the following dialogue (ish) occurs:

Shaggy: "Is it too late to pretend we don't know them [the rest of the gang]?"

Scooby (sticking head accusingly at rest of gang): "Who ARE you?"

And I can't find the right episode. Anybody know the name? I love this scene, for whatever reason.

[Grin]

Area 51 Adjacent, where the gang was captured by the military