I was trying to describe somebody last night, I was attempting to describe that trait whereby people claim to have absolutely no knowledge of some thing that they believe to be 'below' them. Like if somebody mentions David Beckham, or Big Brother for example, they will go. "who's DB?", "what's BB?" as if they have some kind of inbuilt ability whereby something they consider something too 'low brow' it cannot penetrate their consciousness. I used to do it myself until my daughter pointed out that I was making myself look a bit of a pompous berk (bless her).
/sarcasm....similar to calling The Sun a 'comic for adults' which is spot on or referring to The Jeremy Kyle Show a 'formal interview for the mentally ill and DSS claimants which is also rather accurate.