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Mr Shouty from the Cillit Bang advert - though he has been quieter of late.
Any ad where the voiceover uses a silly voice - I'm not 4 years old for god's sake, so don't treat me like one.
Mrs Shouty (With attitude) on a dark dismal legal services/compensation ad - that harridan actually gave me chest pains once.
Any commercial TV ad because I never watch them if I can help it, always switch channels, usually have a massive row with the rest of the family because they claim I am hopeless at timing the return to the interrupted program, and, if on my own, the occasional forgetting what the hell I was watching anyway before the ad came on.