system
A chat on subreddit /r/wallstreetbets
human
As I am one of you: 

Can someone explain this please.

I don't get it.

Why jail?
gpt
Like most laws intent is a huge huge part of how "bad" an action is. OP admits to knowing there was insufficient funds to cover withdrawals they are making, yet does intentionally try larger and larger amounts.. which is proof of intent to defraud the bank.. which they then confirmed with this post.  
  
Wire fraud. That's an actual crime they don't mess around with, especially if you are poor and stupid and make it blatantly obvious you are doing it.  OP better sell those puts and cover those funds, because if their gamble goes sideways the risk side of that trade is staggering..