No parts, but very much the
- million thoughts & can't speak, or
- completely blanked mind, with everything else behind it, or
- gibberish nonsense as all I can reach for are pieces of very different thoughts. Sometimes I'll get a theme, though, like nouns or connecting words. A, the, is, so, but, the, f*ck. f*ck f*ck f*ck f*ck f*ck. His, her, mine, I, f*ck. f*ck f*ck f*ck f*ck f*ck. <<< That one I usually have all the thoughts in my mind, but I can't translate them into speech.
About the only thing that breaks through it is completely losing my temper. If I get angry enough? Then I can usually talk. Not about what I wanted to talk about, usually, but whatever just pissed me the hell off. I've spent so long learning to control my temper, that's both rare as blazes and requires someone going toe to toe with me.