My ex girlfriend(she is American) and I had a funny quarrel which ended up in lot of laughs...
We were talking same stuff like here and she claimed same as Karen here, namely what if you go in the middle of the night and sit in darkness and ...oooops ...fall

into the ceramic hole...
Well I said , why donīt you switch a light before you sit there

so then you would see where your a** is going ...
ah well I guess it is a hard job to put it down....