system
A chat on subreddit /r/wallstreetbets
human
What happens if you have no buying power doing that 😂

gpt
You don't need extra buying power to sell a put/call because it uses the underlying put/call as collateral. You can only sell your underlying though. So if you have a call you can only sell a call and has to be same expiration date. 
  
 The next day you just buy back what you sold and sell off your bought option. You might need a bit more money to buy back the option you sold of it increases in price though so you do need a little bit of cash just in case.