Is when you bite your tongue or cheek. It enrages me beyond reason, I froth as wildly as Cloud No.9 denouncing capitalism. It takes the willpower of Doctor Doom to stop myself from simply destroying the world in sheer blind anger.
Discuss how our bodies obviously weren't intelligently designed because if they were, such abominations would not be possible.
Or things that make you exceptionally mad even though you know they really shouldn't.