Johnny: "But Mrs. Stoner, my mommy told me drugs are bad."
Teacher: "Johnny, stop being such a negative nancy. You'll never get anywhere in life with that attitude."
Johnny: "But, my mommy said..."
Teacher: "Johnny, please shut the fuck up or I'll send you to time out and brutally murder your family."
2.(n) A person who's named Nancy and automatically get's offended by the useas an expression
Person2: No I don't wanna...
Person1: Man, you're such a negative Nancy!
Nancy: Hey what do you have against me!! I'm not negative!!! Geeze!!!
Person1+2: ......... Sorry.....