Man surprises parents with 130-lb. weight loss

Bob Jones via YouTube

A still from Lucas Irwin’s homemade video shows him coming down the stairs to surprise his father and stepmother with his 130-pound weight loss. Irwin’s parents hadn’t seen him for nearly a year, during which he worked to lose weight without letting them in on the secret.

Surprise, mom and dad, I’m 130 pounds thinner!

Lucas Irwin nearly gave his parents a holiday heart attack when he shocked them with his massive weight loss — and he caught the whole thing on video.

The 25-year-old made a vow in December 2012 to slim down from his then-weight of 300 pounds, but kept it a secret from his folks, who he usually only sees a couple of times a year.

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“I only go home once or twice a year, usually once in the summer, once for Christmas,” Irwin said during a Wednesday interview on NBC’s “Today.” “And I made up an excuse not to go home over the summer just so they wouldn’t see me.”

Above: Irwin at 300 pounds and after his 130-pound weight loss, as posted to Imgur.com

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Irwin’s video went viral after he posted it on the site Reddit.com, where he often went for support during the past year.

“Social media was amazing for my weight loss journey,” he told “Today.” “Especially the Reddit LoseIt community.”

For his diet, “95% of it was done through nothing but a 1350 calorie limit per day,” he wrote on Reddit. He also kept a log of everything he ate for an entire year.

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“No foods were off limit, but I survived mostly on tuna salad, chicken with salsa, frozen vegetables, beans and rice, turkey/roast beef sandwiches, spinach and eggs,” he wrote on Reddit.

“After I lost 100 pounds I started walking to work (5 miles) for about 2 months until it got too cold outside.”

Irwin’s hard work paid off in his parents’ reactions.

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“Hey buddy, how are ya — oh my God!” Irwin’s father Jeff Irwin can be heard saying, with his stepmother Susan Irwin quickly echoing the “oh my God!”

“All of s sudden, down the stairs he came,” Jeff told “Today.” “And he looked just fantastic. I was more stunned than anything else. But inside, I was just beaming. I was just … I was over the moon.”

“Just picturing it in my mind again, it brings back tears to my eyes again,” said Susan. “I am so proud of him.”

Irwin says his work isn’t done: The 5’8″ man would like to get down to 150 pounds.

tmiller@nydailynews.com