Should I keep laughing at my father's jokes even though that's probably why he never stopped making them?

The Stoics drew one hard line between what is yours and what is not. Your father's habit — his hunger to land the joke, to hear the room respond — belongs entirely to him, formed by decades of nature working itself out. You did not install it. You cannot uninstall it. But the laugh is yours, and that means it carries a moral weight the other things in this room do not. A performed laugh, offered nightly to manage another person's emotional weather, is a small dishonesty, and small dishonesties compound. Marcus Aurelius did not counsel cruelty; he counseled precision. Respond to what is actually true for you, or say nothing. The alternative is that you calcify into a person who has been lying at dinner for thirty years and calls it love.

“Never esteem anything as of advantage to you that will make you break your word or lose your self-respect.”

— Marcus Aurelius, Meditations

The anguish you feel when the next joke begins is not confusion — Sartre would say confusion is what you are performing instead of it. That tightness is the weight of a freedom you have been postponing. Every obliging laugh was a choice, which means every one was also a small act of authorship: you wrote the next chapter of a man who is funny to his child, who is received, who can keep going. You are not a passive audience. You have been shaping the show. This is not blame — it is the full burden of being condemned to freedom, which is that even your smallest gestures in a fluorescent-lit kitchen are acts of creation. The question now is whether you will keep writing this character, or whether you will put down the pen and let him find out what he makes of silence.

“Man is condemned to be free; because once thrown into the world, he is responsible for everything he does.”

— Jean-Paul Sartre, Existentialism Is a Humanism

Zhaozhou was asked whether a dog has Buddha-nature. He said Mu — nothing, neither yes nor no, a word that cuts the question in half. The question you are carrying has the same problem: it assumes a 'you' who decided to laugh, and a 'him' who was shaped by the decision, and a clean line of cause between them. Zen has no use for that line. You have been holding the water still so the reflection holds since you were small enough to need him to be funny. That is not a strategy. That is the pond doing what ponds do. Before you decided to laugh, before he decided to tell the joke, what was already moving between you? Sit with that. The answer is not in the punchline.

“Before enlightenment, chop wood, carry water. After enlightenment, chop wood, carry water.”

— Zen proverb

Diogenes had no patience for the language people use to avoid what they already know. You said 'probably' — that soft qualifying word that lets you ask the question without committing to its answer, that keeps you comfortable inside the ambiguity while the dinner goes on and the joke comes again. But you know. You have known since the third or fourth Tuesday that the laugh was the leash, that each grin renewed the contract, that you were voting, again, for more of the same. The Cynics were not cruel; they were honest about what comfort costs. Every obliging chuckle was a small bargain struck in bad faith — you got to feel kind, he got to feel funny, and nothing changed. The dog does not bark at its own chain. You already know what to do. The room is right there. You can leave it.

“The great thieves lead away the little thief.”

— Diogenes of Sinope

Camus watched Sisyphus push the boulder and said: imagine him happy. Not because the boulder matters, not because the summit is ever reached, but because the repetition itself — chosen, returned to, owned — is the only dignity available. You have been showing up to the same bad punchline in the same kitchen for years, and nobody made you. That is not a trap. That is the structure of love under absurd conditions, which is the only kind of love that actually exists. The joke means nothing. Your laugh means nothing. And you keep going back, Tuesday after Tuesday, because something in you decided it was worth the return trip. Camus would not tell you to stop. He would tell you the repetition is not the tragedy — pretending you don't choose it is.

“One must imagine Sisyphus happy.”

— Albert Camus, The Myth of Sisyphus