A description often used in regard to pop music, also sometimes to films, fast food etc.

Something that attempts to appeal to a lowest common denominator of tastes, and in so doing irritates by its very blandness. If you aim to have everyone buy your records, you may decide to say things that everyone agrees with. So your message is going to be an uncontroversial tautology, for e.g. "we like to party".

This offends for a couple of reasons: