Sorry, I laughed. I'm astounded by how much the British like puns as opposed to Americans. I've heard British audiences audibly gasp at the high quality of a pun, like it took their breaths away.

Reductively I'd say the prey is the audience in that case, for not being smart enough to see it coming. The best puns are heavily telegraphed yet somehow totally unpredictable. They're clever mirrorings of things everyone is already familiar with, but still didn't see coming.