CrapCon is a fun evening session, which traditionally takes place at the annual Estonian Winter School on Computer Science (EWSCS), where participants of EWSCS are welcome to make short random nonsensical talks, prepared earlier on the same day during the lectures.
The following is my presentation from this year's CrapCon. The first part of it, as is customary for most CrapCon talks, makes fun of the topics being taught during the school, hence it might not make much sense outside the context of the event. The second part is fairly general (and totally serious!), though.
If you find that amusing, certainly check out the talk by Taivo Lints, which is, I think, among the best examples of computer-science-related abstract humor.