Randy: Uh, the brake pedal feels a little mushy. What is the possible cause? Uh, let's get someone new this time. [a sea of hands go up] How about Frasier?
[Frasier and Niles are sitting at the back of the class doodling on their textbooks]
Frasier: ... What?
Randy: What would cause a mushy feeling in the brakes?
Frasier: ... I don't know.
Randy: Niles?
Niles: Uh, mush?