ATLANTIC CITY, N.J. (CBSNewYork) – A New Jersey man has a new phone number after his sons plastered his old one on a billboard in a birthday prank.

Chris Ferry, of Linwood, is turning 62 on Saturday.

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His sons, Chris and Mike, who live in Florida, paid for a billboard on the Black Horse Pike entering Atlantic City that shows his face and says, “Wish my dad happy birthday. Love, your sons” and lists his phone number.

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(Credit: CBS2)

Ferry said he’s received more than 15,000 calls and messages.

“It was fun until this morning. Then I wanted to kill them. But I’m going with it, having a good time,” he told CBS2’s Meg Baker.

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The billboard will stay up until April 16, but in the meantime, Ferry has changed his number.