Walkers Nobby's Nuts by Abbott Mead Vickers BBDO
Ah, the power of advertising. A group of young men walk past a poster exhorting them to "Nibble Nobby's Nuts".
When they enter their local, they see Slade's Noddy Holder sitting down with a pint and a paper, whereupon they dive for his crotch.
Cue a beligerent glam rocker beating them away and shouting "Nobby's Nuts! Not Noddy's! Nibble Nobby's Nuts! Can't you people read?". Simple but very very funny.