The term 'KIND OF JOKE' can be broken down into two crossword solutions: INSIDE (6 letters) and KNOCKKNOCK (10 letters). INSIDE jokes are humorous remarks or references that are only understood by a select group of people who share a common experience or knowledge. KNOCKKNOCK jokes are a type of joke in which the setup consists of someone knocking on a door and then delivering a pun when the door is opened. They are often used as an icebreaker or to lighten the mood in a conversation.