Is it a reference to something? I thought it was just a little slice of life thing, but curious if there’s more to it

A common trope in fiction of the time was that of an aging married couple that does not divorce but that quietly… or even secretly… resents each other.

In contrast, pets are almost universally loved. The idea of living with a pet that you have a quiet resentment for is is humorously foreign and surprising.

Another comment in the thread is hinting at an obscure reference. If there is such a reference, I don’t get it either. The cultural touchstone of the resentful married couple is clearly part of the bit though.

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Haha, this guy has never lived with someone he secretly loathed.

He lives alone with his dog, but he hates the dog.

You’re not the only one.