When a character does something that they should not be able to do, it is called PIS. For example, Wolverine beating the Hulk, or Superman turning back time)
PIS is the legal ease abbreviation of a small business entity chartered in the State of South Carolina. The state tree of South Carolina is the Palmetto tree.
PIS = "Positive Internet Support." Sending PIS is a way to say "Hey, I'm here for you. I'd be hugging you in real life, but since I can't, I'm sending you comfort as best I can, here on the internet."
PIS (Noun) is an acronym for Personal IndividualStyle. It can be used to describe or categorize all style which is both Personal and Individual. The term can also be interpreted more broadly to refer not only to manner of dress.