eighteen
Explanation
The Joke
A man visits a website labeled "Porn" which presents the standard age-verification prompt: "Prove you are over 18." But instead of granting access, the site responds with "Sorry, you are too old for porno," rejecting him for being too far past 18. It then offers him a link to a discount cardigan shop instead. The man reacts with simultaneous outrage and acceptance: "How dare you and also yes please."
The Humor
The comic flips the familiar age-gate trope on its head. Normally, age verification on adult websites exists to keep minors out, and everyone over 18 is welcome. Here, the joke imagines an age ceiling rather than a floor, implying that at a certain point you are simply too old for such content and should be shopping for sensible knitwear instead. The man's split reaction -- indignation at being called old, combined with genuine interest in discount cardigans -- perfectly captures the reluctant self-awareness of aging. It is a joke about the slow, undeniable transition from youthful vices to mundane domestic comforts.