[from Christian eschatological myth] n. The notional line of source at which a program
fails for obscure reasons, implying either that
somebody is out to get it (when you are the
programmer), or that it richly deserves to be so gotten (when you are not).
“It works when I trace through it, but seems to crash on line 666
when I run it.” “What happens is that whenever a large batch
comes through, mmdf dies on the Line of the Beast. Probably some twit
hardcoded a buffer size.”