Sounds like they need to blacklist that one.
In past lives, I've worked for a institution that used to auto-provision student usernames from their initials/part of their surname, and another that would automatically generate fingerprints that were several four letter words in a row.
Both involved some liberal blacklisting of certain terms and at times, some apology and contrition when the automated systems would make statements that don't bare repeating. Schemes like this can often surprise their creators in terms of the "creative" output generated.