Tamaev claims no 17-year-old in the world has a thicker neck, and while this is hard to prove, who is arguing.
"It's reportedly so thick a knife would have trouble penetrating the skin and muscle," news.com.au stated.
His popular Instagram workout videos include one in which he drags three cars using a band around the back of his head. They are not overly big cars, but still, it's impressive work from a teenager although his older mate on the video does the same trick using his teeth.
Ashab has a whopping 1.3m Instagram followers, and he he's not shy about getting into spats with other Russian social media figures.
And while he's not a star in the MMA world yet, he made a promising debut against a Ukranian called Philip Marvin, who has his own YouTube channel with more than two milllion subscribers.
Marvin tried to keep out of the young Hulk's clutches but was pummelled into defeat within two rounds.