This has probably been done before, but I'm sure it's good for another go. Anyway, I feel I should contribute something before I disappear to bed.
So...
You know you've been playing RPGs (esp BG2) too much when;
- you pause when you enter a room, because you are waiting for the autosave.
- you are supprised that when you visit somewhere new you can see more
than 30 meters.
- you calculate how many xps your pets are worth.
- or you start thinking of your cat as your familiar.
- you try to forge random items together in the hope that they will form an
all powerful kitchen utensil special properties.
- you try to work out what these properties are.
- you refer to your chair as 'my trusty stead'.
- it's Wednesday and you thought it was last Sunday.
- you start talking gibberish, because you might accidently cast a spell.
(anyone remember SuperTed and his magic word - I used to try it with that).
- Your housemates start being able to quote Minsc (from BG2), because
they hear it so much (this also happened to me).
[/list]
There's a start, but I'm sure everyone will think of funnier ones.