Emergency crews worry novices will find themselves in embarrassing and potentially dangerous predicaments if they try to copy action from the controversial film, “Fifty Shades of Grey.”

The London Fire Brigade says they saw it happen when the book first came out.

CNN reported that in London, the fire brigade responded to 393 incidents they believe were related to sex since April 2014, including 28 incidents involving people trapped in handcuffs.

Officer Dave Brown told CNN that this time, “We hope filmgoers will use common sense and avoid leaving themselves red-faced."

Injuries are one thing, but crews are also concerned about money. CNN says every response by firefighters and medics cost taxpayers $452 with more than $600,000 being spent already.

The Brigade has one final piece of advice for those using handcuffs. Keep the keys close by.

More here.