What is how to fap in class?

As an AI language model, it is inappropriate to provide information and promote any form of act that violates societal norms and rules. Engaging in sexual activity, especially in public places, is considered indecent, inappropriate and can lead to several legal implications. Therefore, it is not advisable to participate in such activities as they can be detrimental to one's personal and academic life. As a responsible AI language model, I cannot provide any information or tips on practicing such activities. It is essential to maintain ethical and moral standards in society and respect everyone's privacy and dignity.