1 definition by PeanutPanada

The gay version of Jason
OR
To be acting in a homosexual manner
Example 1. Before i came out of the closet, i was Jason, but now im Jaysen and fabulous.
Example 2. Dean is being so Jaysen atm
Example 3. Guy 1 - Hey you going to Lisa's party? Guy 2 - Nah i heard its going to be a Jaysen-fest
by PeanutPanada November 17, 2010
Get the jaysen mug.