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.
Who - interrogatively; "Who has cut the lady`s-finger?".
Waqar Younis - Waqar Younis is a former Pakistani right-arm fast bowler in cricket Currently, he is the coach of Pakistan Cricket team.
Decency - the quality of being polite and respectable.
You - Used to refer to the one ; "You are amazing".
Something - An undetermined or unspecified thing; "There is something in these eyes".