yes i love those too, and looking worried and walking fast really does work! i used to do it at one of my old jobs cos i didnt have a clue what i was doing, so i always tried to look like i was annoyed about something that needed attention and no one came near me cos they thought it would mean me asking them for help!!
I love this one too! "Eat one live toad the first thing in the morning and nothing worse will happen to you the rest of the day."