Woman: You must iron each pleat individually.
Man: Oh, I can do that.
Woman: Oh, no. Let me iron it. I know how to iron.
No, please give me …
Man: Oh, you slipped on your slip.
Woman: Of course I slipped. You pushed me.
Man: I didn’t push you. You pulled so hard on your skirt that you tore it in two.
Woman: I tore my skirt in two? What are you talking about?
I did not tear my skirt. You tore my skirt and made me fall over and slip.
Man: On your slip.
Woman: It’s all your fault.
Man: Oh, you slipped on your slip. ←
Man: On your slip. ←
What does “on your slip” mean in this dialogue?