Is it normal to think of something to say after the moment has passed? Sometimes when I'm in an argument I'll think of a good response to something someone said, but it won't happen until a few minutes after the argument ended. I've had these post-argument thoughts all my life.

Happens with everything.
Sometimes for me when it's not an argument I'll randomly blurt out my revelation, half an hour or an hour later, much to the confusion of those around me. One of my little quirks, apparently, though I think that's pretty normal too.
Sometimes I go right overboard, and retrace a conversation I've had where someone ticked me off ever so slightly, often a stranger or someone I don't know very well, and I imagine if it had gone much worse about the argument that would have followed.
I wouldn't worry about it too much, I just put it down to an overactive imagination.
It actually allows you to polish certain type of interactions, so when similar situations arise in the future, you will have a more well thought response.
It is actually rather healthy to do so. Keep it up !
AS for me - yes, it happens ALL OF THE DAMN TIME!!!
It makes me so annoyed that I didn't come up with it in the moment. Gah!
Yea, I do that a lot. I am slow, bc I blank out a lot when my mind is occupied.
Completely normal. Track down the book 'The Art of Verbal Self-Defense', it might help.
You live and learn.
Hopefully that time will come again and you'll know what to say, how to say it, and hear applause inside once you've nailed it. No shame.
Job well done.
BY THE WAY YOUR SITUATION IS NORMAL..
Happens way too often.
Then when you go back sometimes its not as consitstent or agreeing what you said.
but then about 5 mins later i thought about wat i should of said.
"i would never call u a bit** but now that u mention it, no-one in this world suits that name beter than u" i just hope this argument comes up again so i can use that,
no thats wrong, i dont like arguing.
We all should do it a lot more before responding.
1)You should be the ones deciding when to think and what to think.
2)You should be the ones making the thoughts happen,it's not normal if thoughts just come out of nowhere.When it's too late or too early.
If you experience extreme distress while the argument is taking place there is definitely something wrong.Because there might be a mood issue going on.To make it short,I think It's not normal and you are a bunch of freaks.For the time being,but I could be changing my own mind soon enough.
*ur not alone*
Actually, no I won't.