Hey, I liked it from AD&D, so I kind of just snuck, it in.
* Novice: Let me check my book.
** Practiced: Yep, that's fungus alright.
*** Competent: You might not want to eat that, it's poison.
**** Expert: We could use that poison to our advantage, though.
***** Master: Now if we only had a spool of wire and some coconuts we could use that mushroom to make a nuclear reactor...
From B.J. Zanzibar's World of Darkness. About three or so years old, but new too me.