A New Jersey man will never forget 62nd birthday
The billboard went up on March 6, and by March 12, Chris Ferry had already received well over 15,000 birthday calls and texts from people in countries like the Philippines, Kenya, Luxembourg, Ireland, Guatemala, Nepal and Australia
He actually tried to take every call and answer every text at first
He actually tried to take every call and answer every text at first, but he eventually gave up and changed his voice mail to "thank you for calling to wish me a happy birthday, I really, very much appreciate it "
Chris learned about his sons' prank last Thursday
He'll probably get a few thousand more calls until then
But the billboard is n't coming down until April, so the madness is n't likely to stop anytime soon