A happy couple. People that are doing well in a relationship. A relationship that has been for a long time period. The term is widely used in Jamaica. It is a play on Barbie and Ken the perfect in animated couple.
JA dialect : Yaa try mash up mi dolly house?
Translation: Are u trying to destroy my relationship (dolly house).
Person A: How is ur relationship going?
Person B: Its nice. Everything dolly house.