This literally happens too often with me

Only when joking about past (obviously failed) suicide attempts.

all the damn time, i once did a friends nuclear physics homework in a minute and she looked at me like i was an alien, she got every answer right... or i did. I did it so we could go to a bar and she was taking too long; yes, i literally Good Will Hunting'd that shit. Nuclear physics is easy once you understand how fission and fusion work.

Just the opposite, people take my sarcastic remarks and throw away jokes way to seriously.