As in, "that guy is an all-round swell egg." Found on East Kentucky Power Cooperative, Inc.'s website:
"Among the many achievements that Joe counts on his resume are: Father of John Thomas and Jacob Matthew, Mary Kay Husband of the Year, Chief Froglogger and all around swell egg. Joe is our resident expert in seed harvesting and native plant propagation. He is also our expert on bats and Earth Snakes (because that is the only snake he usually catches)..."