Ever thought about putting a ring somewhere you probably shouldn't? Be warned..

In the past two years seven men have been forced to call London fire crews after getting rings stuck on their penises.

In November last year firefighters came to the rescue of a man forced to undergo surgery to remove two metal rings that had been stuck on his penis for three days.

The man took himself to A&E in the early hours of the morning but when doctors found they couldn’t remove the steel rings they called in fire crews.

Two brave firefighters scrubbed up and removed the rings using pedal cutters - a hydraulic handheld piece of cutting equipment.

This Is Local London: More copies of the Fifty Shades of Grey trilogy are being loaned out in Surrey than anywhere else in the country, according to figures

Fire bosses say the number of red-faced calls has increased since the Fifty Shades of Grey books were released.

And now, with the realease of the new Fifty Shades of Grey film tomorrow (February 13), fire chiefs are concerned things could get a lot worse.

Between April 2013 and December 2014, firefighters attended 472 incidents involving people being trapped or stuck, often in everyday household items:

  • 28 incidents involving people being trapped in handcuffs
  • 14 incidents involving children with their heads stuck in potties or toilet seats
  • 293 rings were removed including seven instances of men with rings stuck on their penises
  • A woman also called crews after her husband got jammed in a chastity belt

This Is Local London:

The spike saw the start of a worldwide campaign called Fifty Shades of Red, asking people to think carefully before getting themselves into sticky situations - but they are still called to more than one embarrassing incident everyday.

Third Officer, Dave Brown, said: "The Fifty Shades effect seems to spike handcuff incidents so we hope film goers will use common sense and avoid leaving themselves red faced.

"I'd like to remind everyone that 999 is an emergency number and should only be used as such.

"If there's a genuine emergency, fire crews will of course attend and will be on the scene to help within minutes."

This Is Local London:

The Fire Brigade have offered advice to those looking to try out what they see in the film:

  • Common sense is needed – if it doesn't look safe, it probably isn't, so don’t do it!
  • If you use handcuffs, always keep the keys handy
  • Fingers and electrical appliances don't mix, especially those with blades