system
A chat on subreddit /r/NoStupidQuestions
human
Might also be a good idea to explain properly that the money isn't from illegal ventures, and i have no idea about taxing cash gifts in the US (i guess this is in the US) but he might have to pay a portion of it in taxes. Make sure he saves a chunk of it so it doesn't bite him in the rear when it's time to do the taxes.
gpt
Lmao only businesses report cash transactions.