A pregnant woman gets in a car accident and falls into a coma. When she wakes up, she sees she's no longer pregnant, and she asks the doctor about her baby.

The doctor replies, "Ma'am you've had twins! a boy and a girl. Your brother came in and named them."
The woman thinks to herself, "No, not my brother... he's an idiot!" She asks him, "Well, what's the girl's name?"
"Denise"
"Wow, that's a great name. What's the boy's name?"
"Denephew"