P-16:pull someone's legs 开某人的玩笑
A:Your handwriting is beautiful. It's really unique!
A:你的字写得真漂亮，非常独特。
B:You must be pulling my legs.
B:你一定在开我的玩笑。
A:Really. You have improved a lot on your handwriting.
A：是真的，你的书法进步不少。
B:I know, I know. I'm keeping on practice, actually.
B：我知道，实际上我一直在坚持练习。
