The term used commonly to pokefun at someone who has made either a spelling or gramatical error whilst trying to appear as a person of intelligence. This is emphasised with the intentional mispronounciation of the word "educated".
Sarah: "I really hope they make an inception for me, seeing as how I'm new to this."
Luke: "It's exception idiot. Damn, I can tell that you've been well edumacated.
When as a student you have missed way too many classes and finals are coming up so in an attempt to not fail your classes you try to teach yourself an entire course in one week!
- Howz studying for your finals going?
- Not good I have to self-edumacate!!
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).