A teenage girl admitted under parental questioning that she was pregnant, but couldn't say who was responsible.

"All right !" bellowed her Mother,
"you march yourself to your room, and don't come out until you can give us a definite answer."

Later that night her voice rang down the stairs.

"Hey Mom, I think I have an idea now."

"I should hope so !"
the Mother responded.
"The very idea that any daughter of mine could get pregnant, let alone not know the father."

"Chill Mom." the girl said.
"I got it narrowed down to the band or the football team."