The uses you bring up are overwhelmingly likely to be covered under fair use, looking at the third factor:
Quote:
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Originally Posted by 'US Copyright Law"
3. the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
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They used two sentences, and in an act of homage to a classic piece of literature/videography. Also neither situation is particularly unique; sick spouses are a characteristic of human life; and the "quote" seems to translate to "Deeper dammit!" which is less defensible as intellectual property than my post.