Being a parent with a good sense of humor is the key to not raising the next Hitler. Making a bit too many out of place jokes, however, might turn the kid into too much of a Howard Stern. Either way, the secret to a healthy childhood is a good balance between those serious moments everyone needs and a good chunk of daily humor. Oh, and that might also be the trick to make children still want to keep in contact with parents a lot after they move out. It just might be.