When surgeons dug into a 71-year-old man’s groin to fix a painless bulge, they found something decidedly not in the surgical plan: a living, 10-inch-long (26 cm) tapeworm, snug as a bug between his bladder and pubic bone. Adding to the weirdness, the man reportedly told doctors, “Yeah, this has happened before.” According to a case report in the New England Journal of Medicine, four years earlier, during a similar hernia repair on his left side, surgeons had pulled out an 18 cm (7-inch) worm. That one was not identified, and he received no anti-parasitic treatment. This time, the worm - identified via genetic test as Spirometra erinaceieuropaei, the cause of sparganosis - was still alive and squirming on the surgical table. Surgeons needed multiple tugs to gently extract the whole thing. The man recalled possibly eating raw snake meat during military service 50 years prior, which could be the source, though the worms' typical lifespan is 20 to 30 years. After the second worm incident, doctors put him on anti-parasitic medication to evict any remaining uninvited guests.