Texting Can Be Tough
This was most likely an extremely perplexing text for this young guy to receive from his mother. Joking about death and other sad things is a thing that some families do, but they would almost certainly consider it odd.
But, in that case, the recipient’s great aunt was either a fan of dark humor or very close to this person. However, it was simply a mixup involving text jargon and abbreviations at the end of the day.