The context of the following conversation is Tracey saw mouse droppings in their house, so they set a trap and caught it.:
Tracy says Oh, I think my mousetrap just went off!.
The friend responds what?.
Tracy responds There was a mouse making a nest in my kitchen, I found it's droppings, but I think I just trapped it.
The friend responds I'm surprised your cat didn't catch it..
Tracy responds He's way too fat to care about anything but his next set of treats..
The friend responds You're not wrong, he looks pretty overweight..