What Exactly Makes A Twink?

[Milkdudd]

I'm not really aware of the specifics of what makes a twink. From what I know, it's a bit of an umbrella, though its supposedly an effeminate, shaven, young guy (usually a bottom). Beyond that, are there any other discerning features that makes a twink stand out?

 

[Itsmeandyou]

Young. Hung. Body.

 

[HOU_HEADHUNTER]

boyish looking and tend to be thin framed