When viewing a public REPL with a running HTTP server and _not_ logged in as the REPL's owner (REPL_OWNER is set to "five-nine"), we saw this offensive message that's _definitely_ not present in the code of the original REPL, visible here: https://github.com/osohq/oso-python-quickstart
It seems like someone was able to modify the server such that it returned the offensive message, but I would've expected that to only modify it for _their_ forked copy of the REPL. From a quick Google search, it seems like it affected a different REPL about a month ago.