pronunciation: JAY – oos
language: Indonesian
definition: a joke that is so unfunny and told so poorly that one cannot help but laugh
sentence: He doesn’t seem to mind that we are laughing at him instead of with him whenever he interjects a jayus into the conversation.
source: http://www.altalang.com/beyond-words/2008/10/12/ten-most-difficult-words-to-translate/
There's A Word For That 