It takes them a long time to swallow their pride.
or
So that real estate agents would have someone to look down on.
or
Three skunks fighting over a pickle
First dog: My master calls me Furball. How about you?
Second Dog: My master calls me Sitboy
or
None. They will never find a bulb that burns as brightly as the old one.
or
He wanted his soil to be rich!
or