I was never able to find it myself. While writing I just guessed it was a gerbil or something. Glad to know you kinda found it and that this game was not just some fever dream.
[edit]
By the way, Internet Archive adds some sort of translation layer for flash animations so it can be opened in modern browsers including on your phone:
I want to know more about this, but at the same time I really don’t.
I braved the google search, found what looks like a flash game thats broken/unsupported on my phone.
http://www.jabtv.com/bigassgame.php
I was never able to find it myself. While writing I just guessed it was a gerbil or something. Glad to know you kinda found it and that this game was not just some fever dream.
[edit]
By the way, Internet Archive adds some sort of translation layer for flash animations so it can be opened in modern browsers including on your phone:
https://web.archive.org/web/20050127013251/http://www.jabtv.com/bigassgame.php