The act of using Twitter excessively - often in a vain attempt to manufacture an alternative reality out of narcissism - to the detriment of one's health and social status.

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.

The act of twittering. In the process of twittering. Often applied to those who twitter on a constant basis.

Masturbating while on twitter.