Sato, a Japanese student, goes to a smiling class in Beijing.

(S=Sato; T=teacher)
S: Konbanwa, evali-badi! (everybody!)(The whole class laughs.) Ha!Ha!Ha!
T: What on earth is that?
S: Wow! You see. It works. My classmates are so happy they're laughing their heads off.
T: They're laughing at you, Mr.Shatou.
S: No,no,no. My name is Sato,not Shatou.(The class laughs again.) I think they're laughing at you.
T: Whatever! Anyway, try to just say, "Good evening!" in English next time. OK?
S: OK. Gud-e-va-ling! (Good evening!) How's that?
T: I haven't got a clue what you're saying.
S: Thank you. Ha!Ha!Ha!

accent 口音 heavy Chinese accent
hospitable 好客的
It works.
laugh their heads off
ridicule 嘲笑(正式词)
Good evening. 见面时 Good night. 离开时 (6：00 or late)
wall flower 无人邀请跳舞的女孩