A body type common outside of America, Germany, and China, as it is a type of beauty underappreciated by the people of these countries -- particularly America, where slim people of either sex are perceived as ill (presumably to make the fat people feel better) and slim males are perceived as lacking masculinity and suspected to be homosexual.
In countries such Japan, France, and Sweden, however, thin people are more well-accepted and appreciated without carrying a social stigma.
'Oh my God, you are so skinny. You need to put some meat on those bones, hun. Are you anorexic or something?'
'No. Fuck you, lardchugger.'