I have to agree with bdsmbill, writing humor is very hard, partly because everyone has a different sense of humor. I try to keep away from 'spoof' story code for that reason. I've read a few of them and have yet to find any humor in one.

[Spoof: 1. a mocking imitation of someone or something, usually light and good-humored. 2. a hoax; prank. 3. to mock lightly and good humoredly; kid. 4. to fool by a hoax; play a trick on, especially one intended to deceive. 5. to scoff at something lightly...]

It would appear that the predominating definitions used in the Library are 2 and 4 because I certainly feel deceived every time I read one.

To get back on-thread, my favorite codes are school, college, job (all of which are abused; just because a character is in high school or has a job doesn't qualify. The school or job has to be relevant to the sex), anything/f, and anything harder than serious. F-self is also good.