答案解析：
C
整段对话是说：Ross 为了缓解等餐时的尴尬沉闷，说了一个段子，虽然他自己很喜欢，但是对方却不喜欢，从最后两句对话可以听出来。只有 C 是不正确的描述。

听力原文：

Ross: I'm just sayin' if dogs do experience jet lag, then, because of the whole um, seven dog years to one human year thing, then, when a dog flies from New York to Los Angeles, he doesn't just lose three hours, he loses like a week and a half.

(Ross starts to laugh, and then makes a face like 'Why did I just say that?' Ross' ex-wife, Carol, and her lesbian lover, Susan, enter the restaurant. Ross stares at them.)

Kristin: That's funny.

听力笔记：

do + 动词原形 表示强调。比如对话中出现的 do experience(确实经历……) jet lag飞行时差反应。

The jet lag's really hit me this time.这次飞行时差反应真厉害。