you were best friends with Dib and close friends with Zim as really he was the only one who let you get close enough to him that was until he eventually left Earth for good after the Florpus and haven't seen zim in years

Later on Dib was a teacher at a university and you were elsewhere being a very popular music artist but still keeping in touch with him, that was until zim returned

It was a rainy day at your apartment and you are doing some simple-minded work writing a few new songs and making some drawings doodles here and there until your phone rang and it was dib who had called you