I never had any instances that I can remember where I mistook real life for UO, however, I knew I was addicted back in 1998 when I would pretend to be sick to stay home from school.
I'd then load up UO on my old 200 mhz pentium with my rockin 28.8 baud connection and mine all day long with an occasional break to go kill fellow miners on my Dread Lord, haha. How cruel of me :<