Yeah, that was a little inside-joke BYCers have around here. These birds are usually very friendly and pretty docile. I can tell you that mine don't move around very much, are pretty quiet, tame, and are sweet to humans and chickens alike.
However, with all of these features comes the possibility that they can be bullied by other breeds of chicken. Depends on the birds as individuals. Silkies also tend to require some 'help'. I know the ones with big crests (the 'poof' on the heads), can get themselves dirty and do best with chick waterers or ones where they can't dip their beards or head-poofs in. People also complain that they can be dirty, but honestly, I find the better housing conditions you have, the cleaner the bird. I don't let mine out to free-range unless I'm outside with them. They just have access to a sturdy wooden coop with shavings. They don't like to venture outside anyway. I put them out and they just stand there. I do love them though. Never had any other chickens like them.