Student: Why did I get an F on the exam?
Teacher: Because you answered all the questions wrong
Student: But I was being sarcastic, those were sarcastic answers

Teacher: Okay, what year was the Declaration of Independence signed?
Student: 1852
Teacher: That's incorrect
Student: Duh I was being sarcastic
Teacher: Okay what did you mean to say
Student: 1853
Teacher: That's also incorrect
Student: COME ON does anyone get sarcasm around here