A pregnant woman was involved in a car accident and fell into a deep coma. After nearly six months, she woke up and saw that she was no longer pregnant and frantically asked the doctor about her baby.
"Ma'am, you had twins!" the doctor said. "A boy and a girl. Your uncle came in and named them."
"Oh, no, not my uncle! He's an idiot," the woman lamented. "What are their names?"
"Well, the girl's name is Denise," the doctor replied.
"Wow, that's not bad! I like it," the woman said. "What about the boy?"
and the punchline is ...
"Denephew," the doctor said.