The automatic log-out that occurs upon reaching a 6 hour session in Old School Runescape. Called the nerd log due to the fact that to hit it you have to be playing medieval cookie clicker for a quarter of a day, like a nerd.
Adam was so in the zone doing Slayer all day that he was caught off guard when he got nerd logged that evening.
by Diamond III Scrublady October 1, 2020