Hal: Skies are clear at the airport. No problem with their flight leaving. I'm checking the freeways.
Malcolm: Dad, Mom, I have to tell you... a thing.
Lois: What?
Malcolm: Grandma... be drugging... the man from China.
Lois: What?
Malcolm: Grandma be drugging the man from China.
Hal: What the hell is this?
Malcolm: Powerful mood elevator. A lot of them. Bottle after bottle after bottle.
Hal: She's drugging him? How is she doing that?
Malcolm: The tea.
Lois: My God, of course, the tea! Remember, she kept refilling his cup all night. That's how I'd do it.
Hal: Now, you're sure that this is her purse?
Malcolm: Ye... Affirmative.
Lois: Oh, stop screwing around. Yes or no? [Malcolm is silent] Yes or no?!
Malcolm: Not no.