NARRATOR: TODAY! ASK DOCTOR SCIENCE! ...A free service from your local grandfather
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NARRATOR: Dr. Science, why do bread knives have those bumpy blade edges? GRAMP (dazed): What...? Oh... it's called a serrated blade. It makes it easier to cut bread... ARTHUR (Sleeping): Z
NARRATOR: Dr. Science, I just cut an English muffin in half using that knife. Do I need to wash the knife now... or can I just put it back in the drawer? GRAMP (Sleeping): Did anyone see you use the knife?
NARRATOR: No. GRAMP (Sleeping): Meh... just put it back... ARTHUR (Sleeping): Z