@Ominous
In brief:
Sui generis in American jurisprudence is a term of art used to identify a group of classification that arises independent of others due to its special characteristics. In application, it refers to the power of a particular entity that is unique to its nature; for example, a court's contempt power. When raised in a legal argument, you are suggesting that a particular case either is inapplicable because it should be confined to its own facts or because the instant case must be confined to its own facts. When raise by someone pro se, it means you're a fucking moron.