system
A chat on subreddit /r/wallstreetbets
human
He bought 11/29 160c on roku and instead of selling them before close and collecting the option premium he ended up exercising them costing him 32k. Now he owns 200 shares of roku, or 2 options contracts worth.  
  
 Not the worst spot to be in, not the best. As others have said he isn't 32k in the hole, he just owns roku stock now and roku is down.

gpt
To add to this, it looks like they didn't have the money to pay for the shares so they got a margin call. Which is when your platform pays for it and you owe them.