Eavesdropping
Overheard at the shelter
Woman one (who was adopting two kittens): I'm going to name them Diego and Freda.
Woman two: You can't name them after lovers, they're brother and sister!

......
Not really eavesdropping as this woman at the shelter was talking to me
"I want to adopt a another cat because my kitty, Princess Maxine Pussyboots is lonely."

(Princess Maxine Pussyboots???!!!)

.....
Overheard at the grocery store
Man (on cell phone) in the wine aisle: I prefer red, she prefers white. So I think I'll get red. Besides, I think I'm going to break up with her anyway.