A person who likes themselves, and think that they are good looking, but infact is the opposite.
The person usually also think that they are good at a lot of things, without being it.
Mocking nickname for musical bands who make their appearance on mainstream talk-shows. Over acting, copying the style of populair British & US bands, excessive attention to style, fashion & hair do, and poor musical skills are typical for these type of bands.
The tv-host just asked for a round of applause for yet another kappersbandje.