Ken, who the ...... ?

Ken, Ken, who the #% is Ken.
Recently someone has been putting stickers on my signboard with some comments. The person signs his name with 'Ken'.  We always wondered who it was. I imagined a guy about thirty-five, short hair and well dressed. Today I met a fellow who introduced himself as Ken. He said that he was the one that put the stickers on my sign. He was in his fifties, grey hair, dressed in an unmatched jacket, pants and sweater vest. He looked like a junior high school math teacher. Well what do you know?

~Tim~