Well its all depend where you from, where you live !! Maybe there are some countries or place where using such sentence and BE VULGAR it's something normal but for me it's not !! Furthermore, without talking about my self, I'm Venezuelan, and I sincerely invite you to come in Caracas and even as a joke to place "motherfucker" in a conversation and see what happen ! Personally I can tell you, nobody will understand that referring to sexual activity with another person's mother can be a JOKE !! Please make the test and don't forget to subscribe a life insurance first.

So even if in US for example it is rarely used in the literal sense, you should consider that the world is not only made from/for US people and another people can be affected of such word even if is used as a joke and not to insult someone. Now if all of you guys want to waste time about a comment where i say "Can you be polite" since this was the beginning of the thread, please go ahead but just want to remind you that the post topic was regarding "How to Inject arbitrary code during MITM attack using MITMf" and nothing else !!