The 35-year-old was taking a leak in the bathroom at his home in Haifa when the reptile leaped up from inside the loo and sank its teeth into his todger. The man reported feeling an intense burning sensation, before he looked down and saw the creature chomping down on his old chap.
After shaking the snake free, he called an ambulance which rushed him to the nearby Rambam Medical Centre.
Doctors examined the bite and quickly determined the snake wasn't poisonous. A hospital spokesperson said: "The man is currently under observation pending additional test results and as soon as we get the results, he will be able to go home."