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A man had to have his penis freed from 13 metal sex rings by firefighters.

The "elaborate and extremely careful" rescue mission took place when the 52-year-old's fetish went wrong.

After the bedroom aids were trapped on his manhood for four days he rushed to the hospital in Munich, Germany, in panic.

But medics were unable to help and called in the Fire Brigade, reports the Local .

The emergency team spent an hour removing the rings one by one using an angle grinder.

Martin Bertram, from Berlin's Dildoking sex shop said: "I can't give an estimate of how big his penis is, but it doesn't have to be particularly big, because there are different sized rings.

"Also, people like to use greater numbers of rings in order to stretch their penis – it's a specific fetish," he added.

(Image: Getty)

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The German Association of Fire Departments said they had no places for a campaign warning people of the dangers of the sex toy.

The cringe-worthy blunder comes days after a young lady sent a selfie to her parents and sister via iMessage, but only realised after it was delivered that there were two sex toys in the shot .