Sometimes we focus so much on the serious aspects of D&D that we forget the importance of the humorous and ludicrous. This is a fantasy game in which magic is commonplace. So with that kind of framework doesn’t it seem right that there should be some outrageously silly things that are just accepted as a part of the fantastic world?
That’s not to say that things shouldn’t make sense. There needs to be some explanation for the unbelievable and the unexpected within the established framework, but the players don’t always have to take it so seriously. By throwing in a few humorous things every once and a while the players come to realize that just because they think something seems bizarre and out of place doesn’t mean that their characters feel the same way.