45ish. You can fluently speak an alignment tongue.
46. You "haven't played since 1985 because every single thing published for 2nd edition was a bunch of munchiney powergamey claptrap."
47. You refer to the players as "actors" and your gaming sessions as "scenes." Er, wait, that's White Wolf snobs.
48. You refuse to even look at any book besides the PHB, DMG, and MM, since they must obviously be unbalanced munchkin food.
49. You let your own munchkin fantasies pervade your homebrew world and destroy any semblance of balance whatsoever. (I had a DM once who felt that dwarves in his world should be able to keep fighting until they reach negative Con*2, and that sorcerors should be able to pick from EVERY spell in the phb... really left my elven druid twiddling his thumbs...)