The guy obviously has issues with attention and the best way, and frankly the only way, to deal with it is to ignore him. The more attention you pay to the problem the more worse it will get and there are about a million and one things to do that are much more productive than spending your time and energy pissed at him.

"The universal aptitude for ineptitude makes any human accomplishment an incredible miracle." John Stapp - "Stapp's Law"
"Klaatu barada nikto"