This is an old joke told by Billy Conolly.
I see it as having relevance to the field of information security, really; I could easily turn this into “the Security Operations Analyst” joke.
The “portability” of a joke is interesting to me; it says something about whether the joke is reaching for some kind of universal (semi-universal) aspect of human experience, or whether it’s a joke about a specific detail of some cultural artifact or other.* Some jokes depend mostly on timing, others on releasing a pent-up reaction, or recognition of a pun, or … whatever. I’m not sure if it’s possible or if it makes sense to try to enumerate the forms of punch-line. Given humanity’s love for classification systems I can easily see a “types of humor” joke somewhere in here.
(*All artifacts are cultural)