I will say this for Old Dogs: It is exactly as funny as you'd expect a movie to be that stars John Travolta and Robin Williams as two bachelors who must suddenly take care of precocious 7-year-old twins, and that was directed by the man who made Wild Hogs. Which is to say, it is not the least bit funny, not once, not even for a minute. Imagine a season's worth of plot devices from TV's most generic sitcom crammed into 88 excruciating minutes.
Here are the thoughts of Williams' character in this frantic, contrived mess: I had a one-night stand seven years ago, and it turns out I'm the father of twins! And now I have to babysit them for two weeks! But I'm working on the Big Account at my job, and I don't have time! Oh no, they don't allow children in my condos -- apparently not even temporarily, to visit -- so we have to stay with my best friend at his un-child-proofed apartment! Oh no, if I screw up this golf game with the client, it'll blow everything -- and I accidentally took my friend's medication this morning that gives me hallucinations! Oh no, my friend and I are going to breakfast with the kids, and everyone thinks we're their grandparents! And now the staff is singing a "welcome to the grandparents' club" song, which surely does not exist in real life anywhere! How embarrassing! And now we're on a camping trip with the kids, and the scout leader thinks my friend and I are gay, except we're too stupid to realize he thinks that, because somehow it's "funnier" if we don't know! Doh! We're on a collision course with wackiness!!