How to break a witness

Overheard Sunday morning in the front hall:

Isaac (to Rachel): “Your pants broken?”

Rachel: “Well, there’s a hole in the knee.”

Isaac: “Why you have a hole in your knee?”

Rachel: “Well, because my knee has a pointy bone in it, and it rubbed and rubbed on my pants until it made a hole.”

Isaac: “A lion eat it?”

Rachel: “No, no lions. See? My knee has a pointy bone, and it rubbed and rubbed on my pants until it made a hole. See?”

Isaac: “A lion eat it?”

Rachel: “No, just my knee.”

Isaac: “A lion eat it?”

Rachel: “Sure, a lion ate it.”

Isaac: “Why?”

Rachel: (silence)

Isaac: “At the zoo.”