Pictures of the wife

I took a bird back to my house the other night.

"Why are all of these photos turned the other way?" she asked, confused.

"They're pictures of my wife," I replied. "They're just too painful to look at."

"Oh, I'm sorry," she stammered, "I didn't know. How did it happen, if you don't mind me asking?"

Spoiler:

"Both of her parents were ugly," I replied.