1) A posh, suburban toff whom aspires to be a brother but has no true frame of refrence.
2) When you prove yourself to be intellectually superior to another through the medium of high brow rap entertainment with added "ghetto" colloquialisms.
1) A posh mans condom, often made from the intestines of endangered species (i.e. panda) and adorned with precious jewels/trinkets.
Dandy Rapper - You sir, have just been dandy rapped!
Dandy Wrapper - 'Lay still, Margot, whilst the maid fetches me a Dandy Wrapper.'