yohbjutb can Mmmjtveurr

A grievous insult meant to absolutely destroy your opponent without them ever finding out and leaving them absolutely confused and puzzled for the rest of the day. The combination of what seems to be a noun and a verb melded together gives the appearance that the real meaning is 'I'd hate to be you' or 'I couldn't care less what you say, do, or think,' yet its disorder keeps the real truth anonymous.

My enemy told me that my yohbjutb can Mmmjtveurr, but I just can't understand what it means or if it is even an insult at all.