A builder shot a nail gun into his penis.

Builder pierces penis

Builder pierces penis

A 22-year-old man was using a hydraulic hand nail equipment on a job and after pulling the trigger at the wrong time he sent a sharp metal pin straight into the top of his crotch just centimetres away from hitting one of the main arteries in his nether region.

However, a work colleague, named Mathew Meagher, has admitted the injured male didn't even flinch when the spike pierced through the skin of his groin, although he went white in reaction to the gruesome sight.

Mathew told the Mirror Online: ''For want of a better phrase, the nail was pretty much through his d**k.

''He was very, very lucky. If it had been any closer the doctors said it would have gone straight through one of the main arteries.

''He came over to me and said he'd shot himself. It's something that shouldn't happen, and at first I couldn't see anything. And then I saw it. I just went white. I said to him, 'Jesus, what's that?' I couldn't believe it.

''He wasn't crying or screaming in pain or anything, he was just dead calm. It hadn't fazed him at all.''