Post Praetorian said:

First question:

Is it possible for God to have a sense of humor? If so, what form must it take?

Consider:

Is God able to have a light sense of humor?

1) A light sense of humor may be described as the ability to laugh at one's self or others in a lighthearted manner.

2) Lightheartedness is expressed as being 'carefree; cheerful; [or] gay'

http://dictionary.reference.com/browse/lightheartedness

3) God cannot be described as the third option above (reference: www.Bible.com)

4) Cheerfulness is described as 'noticeably happy and optimistic'

http://en.wiktionary.org/wiki/cheerful

5) Carefree is described as 'without cares; free of concern; easy; casual; without difficulty'

http://en.wiktionary.org/wiki/carefree

6) God is never once heard to sing happily to himself or whistle.

7) God invented Hell.

8) God cannot be considered cheerful (from 4 and 6).

9) God cannot be considered carefree (from 5 and 7).

10) God cannot be said to have a light sense of humor (from 3, 8, 9).

But which God are we talking about?

God, after all, is only a title for the current president of the universe.

The previous president of the universe is God's political rival, Satan, who was ousted after a particularly clever campaign by Jesus, who sold himself as a political savior who was nevertheless relatable to the common man.

Unfortunately, upon taking the oath of Godhood, Jesus has apparently continued many of the failed policies of his predecessor. Most notably, he has failed to close Hell, where many are still incarcerated due to simple ignorance of official divine policy or of petty offenses such as masturbation or eating shellfish.