Ordered in descending order of dignification:
Mime
Sad Clown
Happy Clown
Jester
Evil Clown
A clown is a person that suffered/is suffering incest. The classification depends on how they reacted to the event, the circumstances surrounding it, and if they could have done something.
For example, a Mime is a person who was not happy about it at all, and couldn't have done anything (highest dignification).
To regain their dignity (and stop sporting the marking) a clown must come to terms with their misfortune, and possibly break contact with the perpetrator.
The incest might be emotional or physical. The marking doesn't seem to make a distinction.
This is observable in VI. Sometimes this marking makes a person "cute", however, I do not think that is the purpose of the marking, but rather flag the person for third people to identify them. Which is why I'm detailing this here in this thread.
Btw, if I might add, Jester women are trash (women who fucked their father willingy). Jester men are also trash, but I hate them less for some reason (been personally screwed by Jester women).