Every replay of Kevin Garnett includes an f-bomb. In fact… you're lucky if you only got one. I once counted 3 mother f-bombs in a 10 second replay.
But… these are the playoffs… and everything is magnified. So this clip (via Odenized) is one of about a bazillion of KG out there saying something unsavory.
Celtics fans aren't shocked by this… but Lord knows that some over-sensitive people out there are going to take this and run with it.