[Dragaera] Tags and Sheep Disease

[Kenneth Gorelick]

Very very mild spoiler ahead
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Where did the name "Tag" for commercial sex worker originate? I  
started to look in the OED, and the closest I could come up with was  
it appears as some kind of decoration. There does not seem to be a  
human "tag" except in detective fiction, where a "tag" is someone who  
follows another person.

However, and here comes the spoiler, I came across the following  
definition of "tag":
  12. A disease in sheep; = tag-sore (14): see quots.
   (Cf. TAGGED 5a, which is evidenced much earlier.)

1741 Compl. Fam.-Piece III. (ed. 3) 494 Of the Tag or Belt in Sheep.  
Sheep are said to be tagged or belt, when they have a Flux, or  
continued running of Ordure, which lighting upon the Tail, the Heat of  
the Dung, by its scalding, breeds the Scab. 1756 Compl. Body Husb. 694  
The Tag is situated in the inner part of the Tail; it consists of  
Scabs and Sores. 1807 Essays Highland Soc. III. 434 A  
disease..affecting the tail, has been denominated Tag.

So now we have at outed Steve for the derivation of his STD, "sheep  
disease"!!