The act of deleting one's You Tube account, usually committed in a moment of personal crisis. You Tubacide is often followed by feelings of regret, and the opening of a new account with a screen name closely associated with the You Tuber's previous screen name.
Someone who takes a long time to get something...i.e. he/she is slow. The word's short form is tubie...it literally means a florescent bulb... because when you switch it on the light doesnt actually flash until a few seconds later. Similarly, the person's brain whom you called a tubelight, doesn't light up and understand something until later