An affliction commonly occurring in nerds that causes them to join nearby conversations uninvited. This normally occurs when the conversation is about a topic the nerd has some knowledge of.
The effects of nerdrettes can be suppressed with force of will, but many nerds lack the social grace to do so.
Man: Those people attending the game convention across the street seem to be all dressed up.
Woman: Yeah, it must be some sort of shooter game thing - see how they all have plastic guns?
Nerd: They're cosplaying as characters from the game Valkyria Chronicles. It's a turn-based military tactics game for PS3.
person 2: A Nerdlebrity? like Chris Hardwick?
person 1: Indeed.
Chris Hardwick: excuse me Sir Gore do you agree with this definition?
Chris Gore:Mmm yes, indubitably my good sir.
Chris Hardwick:Teas and crumpets and whatnot
A female nerd. Usually has glasses and braces. Nerds usually have nerdgasms when a nerdette walks into the room. Their glasses will fog up and they'll get really nervous.
1. I'm going to ask that nerdette if she wants to go to the Star Wars convention with me.
2. The popular girls broke that nerdette's glasses.