Noun. A large bowel movement that piles in the toilet in a great mound. Often times one flush is not enough to rid the toilet of this massive monster.
Later he will quite possibly regret that second helping of chili when he is dropping a dino dump into the porcelain god.
by S.BOB September 22, 2010
Guy 1: I just had the fattest shit ever that my asshole feels numb. It felt like a rock when it came out.
Guy 2: You just had a dino dump.
Guy 2: You just had a dino dump.
by TheWrathOfDaddy June 20, 2018