M-6：make merry at another's expense 以取笑别人为乐
A:Many people don't like to talk with Mark.
A:很多人不喜欢和马克谈话。
B:Have you noticed that? I dislike him, either.
B：你注意到那一点了吗？我也不喜欢他。
A:Can you tell me why?
A：你能说说为什么吗？
B:He always makes merry at another's expense.
B：他总是以取笑别人为乐。
