When someone is doing something scandalous or when something such as a song or a movie has a scandalous ora about it
Steve: Hey, that line from that Lady Gaga song "I wanna take a ride on you disco stick" is pretty scandalous
Ron: I know eh, that whole song has lots of scandalisims like that
When you commit a number of acts which might or might not be legal, but it's definitely frowned upon.
Basically, if you bring wine boxes to a kids birthday party claiming to supply the party with juice boxes.
Why did you judge me? "Yeah removing your mask in an Uber to ugly scream at your iPhone for not recognizing your face whilst trying to get a free ride by drawing attention to your cleavage is scandilistic."