A quick cheatsheet:

logging in: Waking up, entering thera
logging out: taking my rest, leaving thera, going to sleep
logging out for a short time: take a quick nap
group: Traveling party, partners, learning
experience points: knowledge
if you need to regain mana: I need to rest my head, I'm getting a headache, etcetera
lag: my head is slow, I'm feeling groggy, etcetera,
low movement points: my legs are tired, going to collapse, etcetera
crash/reboot: the world falling

Most of this and more you should be able to pick up from listening to Characters talk in-game. To come up with ideas of your own? Think about how OOC conditions affect your char IC... you lose link, nothing is controlling your char's body... you could say you fainted or something like that. That sort of thing.

Splntrd