What is 'Kumbaya.' ?
"Kumbaya, my lord, Kumbaya."
It is a song, often sung by hippies and the like. Its a bit symbolic of the whole "war is bad, flowers are good" mentality.
Well, to use it in context, I believe it's correct usage would be "Kumbaya the house later, and I'll show you the new electronics I bought at Best Buy..."
Kinda like "I'd like to buy the world a Coke"...