ROCHESTER, NY — Willie Murphy didn’t fall for it from the moment a man began pounding on her door just as she was getting ready for bed, pleading with her to call an ambulance. The 82-year-old Rochester grandmother smartly kept him behind a locked door and called police, but the enraged man busted it down.

The short of it is, Murphy beat the bejeezus out of him.

The intruder had the misfortune of breaking into the home of an award-winning body builder.

“It’s kind of semi-dark, and I’m alone, and I’m old. But guess what — I’m tough,” Murphy told news station WHAM, showing off bare, muscular arms while recounting the pummeling she gave to the intruder Thursday. “He picked the wrong house to break into.”

“Tough” doesn’t begin to describe Murphy.

In the 24 years he’s been running World Natural Powerlifting Federation competitions, Ron DeAmicis has never seen anyone like the “one and only” Murphy, who at 105 pounds can deadlift 225 pounds. The octogenarian holds national records in Ironmaiden, bench press and strict curl competitions.

“And as far as her personality, there’s no one that can beat Willie,” DeAmicis told ESPN last year of Murphy, a retired New York state government worker who trains three times a week at her local YMCA in Rochester.

And, the intruder quickly learned, he was no match for the physical powerhouse that is Willie Murphy, either.

First, Murphy told WHAM, she picked up a table and “went to working on him.”

The table broke. She used the metal legs as a billy clubs. She jumped on him, subduing him long enough to dash to the kitchen grab a bottle of baby shampoo. When he started to get up, Murphy aimed at his eyes and squeezed the bottle, emptying it. She whacked him with a broom. The more he grabbed at it, the more she swung.

Murphy didn’t start bodybuilding with the idea she would have to use all of her strength one day to defend her property. For the same reason some people her age take up swimming, yoga or tai chi, powerlifting was a way “to maintain myself,” Murphy, who began entering powerlifting competition a decade ago, told ESPN.

“But I kept getting stronger and stronger, and I don’t wear any belts, I don’t use chalk, and I don’t use the ammonia like other people when they compete in a competition,” Murphy said. “It just happened. I guess, I’m just one of those things that nature has taken good care of me.”

And she took good care of herself. By the time she was finished with him last week, the hapless intruder decided he had had more than enough.

He tried to crawl out of the house. Murphy tried to help him. But he was dead weight.

Police arrived, and he was carted away in an ambulance — a fitting end after he had used that as a ruse to get into Murphy’s house.

“I think he was happy when he went in the ambulance, because I sent him in the ambulance,” Murphy told WHAM. “Yes, I did.”

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