Tendency for video games with character customization to not allow fat women.
In RP Gs today, it is not unusual for the player to be allowed to customize their characters looks. Be it sex, attractiveness, back zits, you name it. Naturally some people find it funny to run around as a very fat character. After all, a fat man doing backflips does have a certain degree of humor. However, the option to make a fat character only applies to male characters most of the time. Female characters can usually only be, at most, slightly chubby, and even then in a well proportioned manner. Prominent examples of this trope include - Star Wars The Old Republic - Saints Row - Aion