Season 4, Episode 3: "The Pitch The Ticket"

Because the radar detector, as I understand it, detects radar!

With a series of beeps and flashing lights.

But for some reason, I didn't hear a thing...

...except for the sound of a police siren.

Well, that's queer, huh?

I want my helmet back!

You give me back my helmet, and pay for that ticket!

Oh, yeah, yeah. You better think again, MoJumbo.