An Itai Guttman is a fictional cartoon character who enjoys walking down the road whilst having a 7 foot fishing rod lodged in his ass crater. Also this character is someone that is so big that when one walks down the street one might be alarmed at how big this creature is and proceed to "shit himself"
Person 1: Hey did you see that Itai Guttman
Person 2: Yes! As i passed him in the street a shat myself and become extremely disturbed.