nerd itch

1. The irresistible urge or impulse to do something nerdy. 2. A strong attraction toward or infatuation with a nerd.

// I bought a ticket to Comic-Con because I've been experiencing a bad case of nerd itch.
// I'm not sure why I binged the whole LOTR trilogy in one weekend... I guess I have nerd itch.
// He can put his rabbit in my hat any day... I totally have nerd itch.