I'm no plumber but I might be able to help.
Once you're finished and stand up, immediately turn around and you'll notice a small, most likely chrome handle looking device on the vertical porcelain rectangular looking box attached to the seat device you just got off.
Carefully push this handle down, releasing the trapped water in the rectangular box in the back causing said water to swirl into the bowl under the seat forcing all material down and out of said bowl and into Calgary's water treatment facility. Here its released into the next city's drinking water. :wink: I hope this has been of some help to you.
Next plumber question.

I can see I'm going to have one of those hectic days today.
