“You are lucky Zim wants to get to the bottom of your strange transformation as you do, Dib-stink. Otherwise Zim would NOT be willing to transport your disgusting self to the beach…”
“You know, when we’re not trying to kill each other, riding in your space ship is actually really cool.”
“… Of course it is. But don’t you DARE push any buttons. It’s bad enough that Zim will have to clean the water up.”
.
Dib was getting very frustrated by his dad’s lack of results, and somehow managed to convince Zim to take him back to the beach.
Zim only agreed because his plans to rule the world aren’t as enjoyable without the human trying to stop him and fighting Dib like this isn’t fair for their magnificent rivalry. (It’s not because he’s WORRIED about Dib. No, of course not. That’s silly.)