a person that is so contained with awesomeness and nerdiness that they are so nerdy they exceed possible superior nerd ranking
Person 1: Wow she is so nerdy I....I....didn't think it was possible to be so nerdy.
Person 2: I know what you mean.
Nerd: That's right I'm nerdalicious. Just face it boys you are jealous.
The definition of a nerd who is the extreme in his area of nerdology, but is extremely and uncannily attractive nonetheless
That dweeb over there is irrestibly nerdalicious