i made a post on tumblr with every easter egg i could find:

https://www.tumblr.com/redyrmes/790961562571685888/all-the-fruity-rumpus-username-eastereggs-b-or?source=share

i THINK its the most exhaustive list out there as of right now, like for example i havent seen anybody mention the fangame easter eggs (homeslice, kittyquest, jaderoute, etc.) but i very much might be mistaken lol