Sheaboo
A Female Weeaboo or Otaku. In other words, a girl that enjoys anime, manga, and video games, generally of the type that boys usually like.
Wow, that girl's reading guren lagann and posting on /b/. She must be a total sheaboo...
Sheaboo
A word that describes a man who identifies as trans and believes himself to be a woman. The word is based on Weeaboo, and has a strong similarity in that it involves people who feel such strong attachment to a certain group of people that they want to belong to that group, but they only have a superficial understanding of that group (usually based on stereotypes) and can never actually be a part of it.
I don't have a problem if a sheaboo wants to have long hair and wear a dress, but he should not compete against women in sports.