There were lotsa laffs and some Happy Birthday tears over the weekend, as family, farmers, and radio pals toasted “Talk Radio Countdown Show” and “American Family Farmer” host Doug Stephan on his Big Eight-Oh. Presenting Doug (center) a memento: TALKERS columnist and consultant Holland Cooke (left) and longtime WCBS business reporter Joe Connolly (right), who began his radio career as a teenager, working with Doug at WKOX, Framingham, Mass.