Please tell me a joke: I want to perform it in class and tell it in class. Want a campus joke?

Although it is not a joke, it will definitely cause a sensation, -----The Pig Head Test! There are several questions as follows: Q1: (Please note that the thinking time cannot exceed five seconds!!) You are participating in a long-distance running competition. After many hardships, you finally surpassed the second place athlete. Where are you now? The answer is revealed: If you answered first, haha, you are completely wrong! Because you are ahead of the person who was originally second, you take his place, that is, second, pig head! Q2: (No more time than the first question!) If you run and run and pass the last place, where are you now? The answer is revealed: If you are second to last, ho ho, you are wrong again! Because how can you surpass the last person? He is already the best, how can you still be behind him? Pig head wow, hehehe~ Q3: (Mathematical mental arithmetic question) 10041003100210010=? Answer immediately! The answer is revealed: 5000? Wrong again! Calculate it with your own calculator, it’s 4100! Q4: (English question) Mary's father has five daughters; 1 nana 2 nene 3 nini 4 nono What's the name of the fifth daughter? The answer is revealed: nunu?no! Of course not.Her name is mary. read the question again please!!!