Okay, I found a few things on the web about toilet dreams. Here's some info I got from the first page of hits from google (some of this stuff is weird and I'm not sure it applies the same way to emets, but for curiosity's sake):
Dream symbol: toilet
toilet, toilets

Interpretation:
Eliminating, cleansing, releasing, purifying
A blocked toilet may represent repressed emotions or an inability to express yourself

Toilet
To see a toilet in your dream, symbolizes a release of emotions or getting rid of something in your life that is useless.
To see a clogged toilet in your dream, signifies that you are holding in and keeping your feelings to yourself. Your emotions have been pent up too long.
To see an overflowing toilet in your dream, denotes your desires to fully express your emotions.

The toilet is a symbol of emotional relief or unloading unwanted pressure. Sitting on a toilet means that you are getting rid of an emotional or an external burden. Seeing a human excrement or producing it predicts a win or additional income.



<A name=toilet>TOILET</A>The actual room: Many people find their only privacy in the toilet, so it can depict their need for, or feelings about, privacy.


If it is a bathroom and toilet: Possibly includes the need for cleaning up your sexual attitudes or general attitude to others and self.


Toilet bowl: The part of you that deals with your body wastes, and the emotions you need to discharge. It can also represent the female sexual organ