I got 19 out of 25.

Some of the questions I was really tempted to cheat on; for example the no smoking sign - I mean there's one in my room right behind me. Though I stayed focused and visualised, (as I did with the traffic light, pencil and paperclip questions) and got it right!

Also, the one about the keys on a phone was fricken' easy for me; I work with the damn things all day, five days a week!

Had to guess a few though. And here in Britain, hot dog rolls come in packets of six or twelve, never (or very rarely) eight. >=(

I turned off the background music; I was listening to iTunes.