Zim is chasing dib because dib took a picture of Zim without his disguise on
Zim: I'll get you Dib worm!
Dib: (drops the tape and the tape shatters)
Zim: ha-ha dib looks like ZIMMM is no match for your human mind!
Dib: uh I just dropped the tape… you know what… go home Zim… just go home!
Zim: ok fine…
Zim accidentally walks into gazs room and finds urken space craft and gadgets in her closet
Zim: huh? Urken space craft? How? The Gaz human with urken space craft?
Gaz walks in and finds Zim snooping through her closet
Gaz: find what you're looking for?
Zim: your urken? No? Maybe?
Gaz: yes I am urken
Zim: but how… my computer says you have human DNA!
Gaz: I was accidentally sent here in a space ship when I was supposed to be sent to another planet…
Gaz: but I landed here... on earth… I used human DNA for my disguise and I've been here ever since…
Zim: but your ship still works!
Gaz: yes but I have liked here on earth and have found myself an obsession with these video games
Dib pops up in his bed breathing hard
Dib: a dream?
Dib: wow do I have weird dreams!