<humour> (By analogy with FIFO - first-in, first-out) first in, still here.
A joking way of pointing out that processing of a particular sequence of events or requests has stopped dead. Also "FISH mode" and "FISHnet"; the latter may be applied to any network that is running really slowly or exhibiting extreme flakiness.
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Nearby terms: first-order logic « First Party DMA « fish « FISH queue » FITNR » FITS » FIX