Dinowilliam's Disease is a non-contagious disease that occurs when someone is "whipped without having a female lover", as quoted by Prof of Commerce, Philip Phung, Melbourne University.

In short, this refers to someone who DOES NOT have a girlfriend, but still contains the symptoms associated with being whipped.

The following includes but is not limited to some of the symptoms:
- Messaging all the group chats (whether it be the basketball group chat, tennis group chat, etc, but does so to get info on girls as opposed to actually socialize)
- Throws 6 million parties despite being in woop woop so no one can actually get to his house
- Ditching your friends on your Eng Lang table
Daquan: Yo, this nigger William doesn't talk in our group chat anymore! Wtf is he doing Bruh
Rajesh: OnGod, this nigga be tripping, he must have Dinowilliams disease
by Bruh Zhou November 18, 2019
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