Katy Perry told a member of the RAF her "cut off" age for men she'll date is 50. The 31-year-old singer was performing at Dubai Airport's Airshow Gala dinner earlier this week when she flirted up a storm with Wing Commander Mike Woods from Newcastle. Mike gave Katy - who was previously married to comedian Russell Brand- his business card and told her he was celebrating his 48th birthday. The 'Dark Horse' hitmaker - who is believed to still be dating on/off boyfriend John Mayer replied: "50's my cut off." Katy dedicated a song to the decorated airman and asked if he would catch her as she jumped into the crowd before jokingly shooing him away by saying: "Down boy, down boy!"