What annoys me, is that I have a friend who is genuinely reeeeeaaaaaaally dumb. Everyone takes the **** out of her for it. She is nicknamed for it. Whenever she is late anywhere, people make jokes about it and relate it to her dumb tendancies. Whenever she gets something wrong, people laugh at her. She's absolutely lovely, much like this character Brian is playing. But whenever people do this, she gets really, really upset. It drives her mad.
I have another friend who is massively intelligent but with no common sense - and she is the same. Whenever she says something really dumb, she's dead embarrassed. She doesn't continue to keep up the act for hours upon end, pretending she still doesn't get it. Helen from BB2 was the same - she was the first dim/dumb character and whenever she realised she had done/said something stupid, she would laugh and be embarrassed.
Brian is completely unrealistic. I cannot stand how much people believe it!