アメリカン・スラング・レッスンがシュロン・レッスンに - シンディ・スターフォール

I am so grateful to have such a nice American host family. I was scared to leave Vietnam and come to America but feel I have fit in nicely with my knowledge of the English language. I am asking my host step-brother for help today. He can tell me what to say when people say these strange phrases to me. There is one word I recently heard that had me very confused because I have not heard a word that sounds like this before. Do you know what this word means, host step-brother? He says its what happens when guys Jerk off their penis. I am very intrigued by American penis and want to see my host brothers member. Oh wow! American penis is so big! I only saw my boyfriends penis but he is back in Vietnam. I want to learn all of American men.