When someone's dick is so small... that it can only be measured in decimal form.
Male Doctor: "I'm sorry, Rob. But you have a case of Decimal Dick Syndrome. Highly contagious. Please stay away from me."
a mistake made by a fifth grader and was put in urban dictionary
Someone who is obsessed with fruit snacks and grape and always talks in caps-lock. But is cool at the same time. He is the most hype person to exist.
Person: I bought some fruit snacks
Decim: !!!!!!!!!!!!!!!! FRUIT SNACKS !!!!!!!!!!!!!