I managed to be an extreemly stupid passenger at LBIA last week. Not flown from there before, got myself confused and asked at information how to find my way through security. Information lady said "turn round", so I did and there is a sign, practically over my head sayig "all departures" and a big black arrow....
I felt like a total and utter muppet.
all I can say is that I must have left my brain at home...