You could think of it in terms of time: online is the exception, while IRL is the default state. Then, what would be the most default state in normal life?
I think awake and sleep could form a pair like that. Being awake takes more time than sleeping, so awake would be the default state. You could also think that various other altered states of mind could be the exception instead of being asleep.
Being high as a kite and being sober form a dichotomy similar to that of being online vs. being IRL.