[speaker001:] Bill, I must tell you the truth. You failed the English exam again.
[speaker002:] Ah? Really? That stinks!
[speaker001:] Haha. April Fool's! Did you forget what day it is today?
[speaker002:] Wow, you were pulling my leg all along. I was really fooled.
[speaker001:] Alright, now let's be serious. Actually, you get high marks in the exam.