` ` Fifty Shades '' could be behind rise in emergencies involving handcuffs , U.S. firefighters say . The city 's firefighters have been called to 1,300 handcuff incidents in 2011 . A London congressman says prisoners in Camp Seven are also fans .
`` Fifty Shades '' could be behind rise in emergencies involving handcuffs , London firefighters say . The city 's firefighters have been called to 79 handcuff incidents in the past three years . A U.S. congressman says prisoners in Guantanamo are also fans .