Quotes: F Minus Minus

"Is it a D? Is it a B? No, it's Super F!"

Student: I don't think I deserved a zero on this test.
Teacher: Neither do I. But it's the lowest grade I could give you.
— A popular Urban Legend.

"You're what? You're giving me a Z? A Z is not a grade, a Z is sarcasm!"
Lucy, Peanuts