This essay evaluates two arguments found in John Morreall’s Taking Laughter Seriously: That Christianity is incompatible with a sense of humor since the latter requires that a person take nothing with absolute seriousness, and that God can have no sense of humor because he is omniscient. I point out that seriousness about something is a necessary condition of humor and that what people find funny is in part a function of what they take seriously. I illustrate these points with examples (...) from Samuel Johnson and SorenKierkegaard. Then I show how ultimate seriousness is compatible with a sense of humor, by appeal to Kierkegaard’s notion of a “way out” of responsibility for the object of one’s seriousness. Here I illustrate with St. Francis of Assisi, William James, and Kierkegaard.Morreall’s claim that God’s omniscience rules out his having a sense of humor turns on the thesis, fundamental to his book, that humor depends on “psychological shift,” which he mistakenly identifies with surprise. I distinguish these concepts, show that humor should not be construed even in terms of the (weaker) concept of psychological shift, and suggest a way of understanding God’s omniscience such that it is compatible with his sense of humor. (shrink)