As IT process methodologies go, ITIL is one of the least prone to failure.
Perhaps that is why I can't think of any ITIL humor at the moment!
We should be able to make up some ITIL humor if we put our heads together. There's a lot of good material in Incident Management, Problem Management, and Change Management.
Here's an oldie but a goodie about implementing anything in IT:
Six Phases of an IT Project - Enthusiasm
- Disillusionment
- Panic
- Search for the guilty
- Punishment of the innocent
- Praise for the non-participants