A female character possessing all the traits likely to lure nerdy males into consuming a particular media product and included in that media product precisely for that purpose.
Such characters are usually cute and mousy, possess mathematical or scientific intelligence, often redheaded, generally nonthreatening, etc.
Examples include “Willow” from “Buffy: The Vampire Slayer” and “Chloe” from “Stargate: Universe”
Nerd 1: What do you mean Chloe isn't hot? She's my dream girl.
Nerd 2: Well, exactly. She is just too obviously Hollywood dork bait for me to get into.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.