You learn something everyday. I was sitting across a group of men in the bar the other day who were discussing their mutual friend who became a grandfather before he became a father. Huh? I was puzzled as well. This guy,married a single mother and she didn't bear him any children. He adopted her daughter and she named her son after him. I learnt a new term.or rather a new application of a familiar term.Buy one get one free. That's when you marry a woman a single woman. You get her and the child/ren for free. BOGOF,anyone?