In the very first chemistry class of a very reputated college in France, where every student discovered the new, extremely fast pace of the teaching, with an authoritarian teacher, on a lesson I already knew from high school, I, alone in the lecture, raised my hand to answer a question. And just made a very appropriate, contextual pun on paar with the answer. Teacher smiled. Asked someone else. That gave me quite a reputation for the next 5 years. The guy who makes a pun to a stern teacher.<p>I love lecture hall situations, where you mix respect, intrigue, the stress of succeeding, and you get to meet the real humans.