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Martha: Don't use the upstairs bathroom. It's
backed up. I have to snake the pipes.
Clark: Where's the leftover pizza?
Martha: Fridge, second shelf. Or you could nuke
the chili for dinner. Clark? (He's busy listening to music.)
Some clue you actually heard me. Isn't this one supposed to have question mark at the end?

Clark: Upstairs bathroom off-limits
after nuclear chili dinner.
I guess he doesn't mean the chili Martha mentioned, right?
And what does the underlined part mean?

Martha: Glad to see your hearing
hasn't changed.
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"Some clue you actually heard me." This piece of dialog is not a sentence. We have to guess at what's missing. "May I please have etc.??" "I'll pretend I've received etc. " "I don't even get etc. "

It's popular now to refer to microwaving something as "nukeing it." Presumably he chose the nuked chili over the leftover pizza. That is, the answer to your middle blue is, "wrong."

I guess the bathroom won't be inhabitable for a time after his chili dinner, especially if it's backed up.
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In the context, I think "nuclear chili dinner" is a metaphor for an extremely spicy chili. One that causes very bad gas.
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Comments  
Hi,

Martha: Don't use the upstairs bathroom. It's
backed up. I have to snake the pipes.

Clark: Where's the leftover pizza?

Martha: Fridge, second shelf. Or you could nuke
the chili for dinner. Clark? (He's busy listening to music.)

Some clue you actually heard me. Isn't this one supposed to have question mark at the end? It doesn't seem like a question to me. It seems like she is saying, with irritation, 'Please give me some clue that . . '

Clark: Upstairs bathroom off-limits
after nuclear chili dinner.

I guess he doesn't mean the chili Martha mentioned, right? Why do you think that? He's just repeating what she said.

And what does the underlined part mean? I think you misheard. I think he says 'after nuking (the) chili dinner.

Martha: Glad to see your hearing
hasn't changed.

Don't forget he has super hearing!

Best wishes, Clive
 Avangi's reply was promoted to an answer.
CliveHi,
Martha: Don't use the upstairs bathroom. It's
backed up. I have to snake the pipes.

Clark: Where's the leftover pizza?

Martha: Fridge, second shelf. Or you could nuke
the chili for dinner. Clark? (He's busy listening to music.)

Some clue you actually heard me. Isn't this one supposed to have question mark at the end? It doesn't seem like a question to me. It seems like she is saying, with irritation, 'Please give me some clue that . . '

Clark: Upstairs bathroom off-limits
after nuclear chili dinner.

I guess he doesn't mean the chili Martha mentioned, right? Why do you think that? He's just repeating what she said.

And what does the underlined part mean? I think you misheard.
Well, to tell you the truth, I thought so too but then I found out subs from the original DVD.
He says just that "Upstairs bathroom off-limits after nuclear chili dinner." Maybe he means
the bathroom is off-limits because of the nuked chili they've had, huh?

Martha: Glad to see your hearing
hasn't changed.

Don't forget he has super hearing! Indeed but not in the 1st season.Emotion: big smile

Best wishes, Clive

Teachers: We supply a list of EFL job vacancies
 Vorpar's reply was promoted to an answer.
Yeah, now it makes sence. Thanks, guys!