Below is a question posed on the Village pump about obscene user names. Yep, we've got another one.
While there are arguments to be made both for and against the current policy, Jimbo has established that "obscene" user names are not OK. "Cumguzzler" probably qualifies, so Brion (or someone else with db access) should go ahead and change it to CMG or something similar.
Regards,
Erik