Jaison is the intelligent/introspective variation of Jason, in addition to the super, ultra sexyness that generally characterizes Jason's. The additional "I" represents the extra introspective/intelligent side of the jaison which gives a set of characteristic's that uniquely define a Jaison.
In short they are known for being:
1. That book/painting/song is a masterpiece! You pulled a jaison!
2. Look at that cute photographer over there! He is such a jaison!
3. Wow, you developed a way to cook food using a specific frequency range in the electromagnetic spectrum and your sexy! You must be a Jaison!