heart-attack
Explanation
The Joke
A restaurant advertises a new "Heart Attack Burger" -- a massive sandwich loaded with eggs, bacon, and a mound of extremely caloric ingredients. A customer asks what makes it a "heart attack" burger, and the server explains the absurd nutritional content. When the customer asks "Why would I eat this?", the server deadpans: "Look at your menu." The customer then asks what they would recommend, and the server suggests "I'd avoid the Death by Chocolate dessert."
The comic plays on the real-world trend of restaurants naming menu items after fatal medical conditions or violent events as a way to signal extreme indulgence. The joke is that in this restaurant, these names are not playful exaggerations -- they are literal warnings. The server's recommendation to avoid the "Death by Chocolate" dessert implies that it, too, is genuinely lethal. The author's comment that "this is an anti-pun" is apt: instead of a name being a clever wordplay on something harmless, the name is straightforwardly descriptive of the consequences.
The Humor
The comedy comes from the matter-of-fact tone with which both the server and the customer engage with what is essentially a menu designed to kill people. Rather than being alarmed, the customer simply asks for a recommendation, and the server calmly steers them away from an even more dangerous option. The hovertext ("Also, if you see a killer ice cream sundae running around, call the police") extends the joke into literal territory, suggesting that somewhere in this restaurant there is a dessert that has achieved sentience and is actively murdering people.