koyne
This word is not pronounced kanye or coin or any other silly way, it's pronounced ko-hen. This word is used to call someone cool or amazing or something someone does. If someone calls you a koyne you should be very pleased.
Boy 1: Dude we did the most koyne thing.
Boy 2: I know right!!!
Or
Boy: Your so koyne.
Girl: Aww thanks.
Boy 2: I know right!!!
Or
Boy: Your so koyne.
Girl: Aww thanks.
Koyn
To beat someone up, often used as a threat in an aggressive way. Used mostly in rough parts of Birmingham.
Gangster 1: Piss off wallad
Gangster 2: Shut up or i'll fookin koyn ya
Gangster 2: Shut up or i'll fookin koyn ya