Three Wife and a Happy Life

This is what I heard this morning.

A: You need three wife, I am telling you.

B: I thought two will be enough

A: No no no! You need three!

B: So where do I put them?

A: Make sure they are nicely separated and not contacting with each other

B: I still don't see the point. Why do I need three wife?

A:  The relatioinship may be complicated, but in the end you will be a lot happier.

After a long pause, finally, I figured it out.

The project needs three WIRES for the power cable.  

What was I thinking. Orz