Morgan Freeman, Michael Douglas, Robert De Niro, Kevin Kline—I used to think I’d really miss these guys when they were gone, but this comedy about four old pals making a twilight trip to Vegas is such a giant geriatric diaper that I’m beginning to change my mind. Mary Steenburgen plays the well-preserved lounge singer fought over by Douglas and De Niro; Freeman has some conflict with his grown son, and Kline holds down the Viagra jokes. Jon Turteltaub (While You Were Sleeping) directed a feeble script by Dan Fogelman (The Guilt Trip); with Jerry Ferrara and Romany Malco.