Dib climbed over Zim's backyard fence, assembled only two days ago. Zim suddenly wanting a backyard meant trouble; he HAD to be up to something!
As soon as Dib was over the fence, he saw something fully unexpected; a swimming pool.
'Zim hates water, and Gir is a robot! Why a pool?!' Dib thought. He glanced around, and upon seeing no one, he lurked to the pool's edge.
He stared into the water. At first he didn't see anything, then something shimmered. He leaned in close, and a dolphin jumped up, swallowing Dib whole.
Zim laughed at the camera feed.