What I think when people in my class read:

That’s a period, not a comma.
That’s a comma, not a period.
Why the hell can’t you pronounce that word?
The teacher just corrected you, why'd you get it wrong again?!
I'd prefer removing my ovaries.
If you can’t read, why’d you raise your hand?
You really can't be this slow.
WHAT THE HELL
Fuck this long paragraph that you will have to read
My skin’s crawling
Oh god not him, his voice sounds like a dying nail on a dying chalkboard
You skipped a line
LOL what was that?
You can't be such a dick.