If a stock achieves NB status, the caller can request retirement. It will then be removed from the list and the venerated caller will have the opportunity to pick another.
I don't know but was under the impression that a NOBRAINER was something that one would get the opportunity to sell for a 50% profit before having to sell for a 25% loss. If that is the case then once having achieved NOBRAINER STATUS, the stock should be retired just as a LAMEBRAINER is retired. Anyway anyone who would not take at least the 50% prior to it retracing to less than 25% profit should qualify as having NO BRAINS. JMHO.