Depends on the situation. But generally:
First stage: cold, quiet, locked down. I'm trying not to say anything I'd regret. My eyes are probably bugging out because I really, really want to fly off the handle and verbally assault you, but I know I shouldn't because it'd cause a huge messy ordeal.
Second stage (sometimes this just bypasses the first): Solar flare-esque emotional outburst. I say something that doesn't quite make sense, or it does make sense but there is more emotional charge to my words that I intend to use. I do this sometimes when someone is being completely ridiculous and I react more strongly to emotions that I didn't even consciously realise I was feeling. Or, I could be frustrated and might be saying things that aren't very kind to unsuspecting people.
Third stage: Blow up of the nuclear missile sort. By this point I have passed the threshold of all rational thought and have descended headlong into a rampage of anger/frustration. At some point, even the rampage isn't enough to express everything that's been bottled up and I start to cry at the same time I'm mindlessly shouting at someone.
Fourth stage: Cool-down/personal flogging. This happens whenever I get upset. Sometimes I don't even go through a blow-up for this to happen. All I have to do is be the slightest bit rude to someone and I'll start flogging myself for being a monster. Usually a lot of crying and hiding somewhere where no one will find me for a while and feeling sorry for myself. Whoever might have upset me in the first place is immediately made innocent and everything is my fault.
Keep in mind that I really don't blow-up very often but I do do all the other things from time to time. Especially when I'm feeling generally down for reasons I don't understand. People rarely ever see the pathetic/outraged stuff, though.
Well thought out. Mine is very, very similar if not exactly the same. I might describe it a little different depending on the situation. Assuming it's someone I know well that has pissed me off? And we're in inescapable proximity to one another? Hrm...
INFJ anger seems to be something that could be visualized in an artistic sequence.
Image 1: Two neutral grey orbs face off.
Image 2: INFJ orb sprouts an icy blue orb within itself.
Image 3: As it grows, the heart of the icy blue orb sprouts a red core.
Image 4: The red core grows rapidly, outgrowing the blue orb and consuming it.
Image 5: The red core becomes a red behemoth enveloping the neutral orb once larger than both and turns
supernova.
Image 6: The red sun begins to shrink and implode almost as quickly as it exploded.
Image 7: Two neutral grey orbs face away to recover.
Ta-da! Too bad I can't paint.
*sighs* *grumbles* *berates self* *ambles away*