the highgest possible level of sexiness, only acheived through years of rigorus training

A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.

Someone who is super beautiful and attractive. They also have a wonderful personality and sense of humor and are all around amazing. Not to mention theyre great in bed.

When someone has reached such a level of sexiness that they can't even be considered sexy any more.

The category of attractiveness above sexy.
Highest level of attractiveness.

When a guy or girl is so sexy that you must add an extra letter to get the point across.

The way someone or something looks or acts. In a similar way to partay, the word Sexay is used not only to describe 'such and such' but can be used, especially on forums, to make the sense of being a bit 'out of it'. Instead of Sexy, people use this to make something sound better than it originally is. Sometimes people use more than one 'A' to make their point better.

ooo... *wink*