All gaming groups need traditions.

Better traditions than interrupting the game to quote Monty Python, that is. That's not so much a tradition as something to make the GM rip his hair out in frustration that you're not actually playing the game.

Come to think of it, combining that with any other traditions is not a bad idea.

Transcript

R2-D2: Finally, my dreams of owning a space dreadnought are realised.
Obi-Wan: Okay, fine. I guess we have to try to land this thing safely.
Obi-Wan: Let's see. This is the distance to the ground... which is the integral of our speed over—
R2-D2: I'll handle this.
Obi-Wan: If you think you can.
R2-D2: I'm an astro-navigation specialist. This is what I was built for.
Obi-Wan: Didn't you say you were an all-purpose droid?
R2-D2: By extension, yes. Any computable function can be expressed in terms of lander calculus.
{beat}
Anakin: If throwing peanuts at Pete is another gaming tradition, I heartily approve.