You have diagnosed Pepsi, named after Pepsicock, who's calling card is to post old news that has been posted already.
WOB is short for "want of bees" who matt teach, probably a decade and a half ago, used instead of wannabe. It is essentially a malapropism, which is a word mistakenly used in place of a similar-sounding one, often with an unintentionally amusing effect. Think "escape goat" or doing a "flamingo dance." In this case, the thread title said "capture this thread" rather than "caption this thread."*
* Edited to note that Want of Bee was born 3/14/05.
The following are recognized by the HROT community as certified Want of Bees. Usage of these by any poster is assumed to be usage with full knowledge by that poster of the incorrectness of the WOB. Usage of any other WOB will be assumed to be proof of the supreme stupidity of the using poster...
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