One: Today my mom asked me how old I am, I am also an only child, so--it can't be blamed on confusion or anything.
Two: I'm like really, REALLY "patient." To make me feel "angry" I feel like someone has to be behaving a manner that can only be described as "insane." That said, there is ONE behavior that makes me feel consistently enraged, and if you do that behavior, you can count on the fact that I will "snap" at you.
I have a SUPER hard time concentrating, so when I'm working, like writing, editing photos, etc, I always wear headphones. Sometimes I don't even play music, I just wear headphones so that I can't hear outside noises and people won't distract me. If you try to talk to me when I have headphones on, I will literally "freak out." Being distracted when I am concentrating is the only behavior I can think of, in regard to me personally, that makes me feel belligerent.
The thing is, if someone interrupts me ONCE, I can "deal" with that. I feel really irritated, but like--I can "deal" with it. It's when someone interrupts me more than once, like to basically say nothing, that I feel like I want to punch them in the face or choke them. Like I will probably "yell" at that person, and by "yell" I mean talk to them in a calm, "inside" voice while saying something like, "I wear headphones so that people will not interrupt me, please stop interrupting me, thank you."