2015-01-11
Explanation
The Joke
A man excitedly announces that he was bitten by a radioactive spider and declares "It''s superpower time!" His companion points out that all spiders are radioactive because all common elements of life have radioactive isotopes. Undeterred, the man says "But look! I can shoot fluid from my wrists!" His companion flatly responds: "That''s blood. Please call the hospital."
The Humor
The comic methodically dismantles the Spider-Man origin story using real science. The first punchline addresses the premise: being bitten by a "radioactive spider" is not special because, technically, every living organism contains trace amounts of radioactive isotopes (such as carbon-14 and potassium-40). So every spider bite is, in a sense, a radioactive spider bite.
The second punchline is darker and more physical. When the man tries to demonstrate his supposed web-shooting ability, his companion identifies the fluid as blood -- meaning the man has either injured himself trying to force fluid from his wrists or is experiencing some kind of medical emergency. The escalation from geeky pedantry ("all elements have radioactive isotopes") to genuine medical concern ("please call the hospital") creates a rapid tonal shift that makes the joke land harder.
References
This is a parody of Spider-Man''s origin story from Marvel Comics, in which Peter Parker is bitten by a radioactive spider and gains the ability to shoot webs, climb walls, and sense danger. The scientific point about radioactive isotopes is accurate -- carbon-14, potassium-40, and other naturally occurring radioactive isotopes are present in all living things.