Well, the mystery man guesses just keep coming! I applaud your valiant (and amusing) efforts. Your comprehensive list of possibilities gave me quite a chuckle!
While I do consider myself a gentleman and I did recently celebrate a milestone--and some folks may even think me mysterious--I am not the honoree. Remember that I mentioned his milestone is yet to come.
I can offer no clues, but I encourage more guesses. Rumor has it that Elvis was sighted in Vermont recently... .