Naughty Grandma Lacey loves a window of Opportunity, and never lets one go to waste. She has a secret mobile phone with a string of black 'sperm donors' on speed-dial and she ain't afraid to use them. As soon as her hubby announces he's going out or going away, it takes her literally minutes to arrange some afternoon distraction for herself. And those guys.... always so happy to see their phones light up with Granny's number. Here's why