Bruce doesn't intend to open anything, but he's going to be hungry later due to only eating cheese sticks, and it was something to do to keep busy for a moment in the initial stages of Clark's shell-shocked reaction. He sets the parcel on the kitchen counter, and leaves it there.

"Can you sick back down," he says, staring at Clark like he's trying very hard to communicate something. And he adds: "Please."

Must be serious if he's using the p-word.