答案解析：
C
整段對話是說：Ross 為了緩解等餐時的尷尬沉悶，說了一個段子，雖然他自己很喜歡，但是對方卻不喜歡，從最后兩句對話可以聽出來。只有 C 是不正確的描述。

聽力原文：

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.

聽力筆記：

do + 動詞原形 表示強調。比如對話中出現的 do experience(確實經歷……) jet lag飛行時差反應。

The jet lag's really hit me this time.這次飛行時差反應真厲害。