Very famed South Korean pop song, sung by Park Jae-sang who`s stage name is PSY.
Gangnam style video has been viewed about 1 billion times on YouTube.
Brother-In-Law - a brother by marriage; "Elder brother-in-law".
Nut - usually large hard-shelled seed.
Gold Digger - a woman who dates other people only because they are rich, so that they can get money from them; "My rich 81 year-old grandfather has a new girlfriend I think she is a gold digger".
Your - The possessive form of you; "Mind your own business".
Riot - take part in a riot; disturb the public peace by engaging in a riot; "Rioting students".