Aj died in a bar.
The end.
Death at the Bar
Explanation
Explain Bear
Listen here, friend. The joke is that "Aj" sounds like "A. J.," which is short for "A-Okay." Get it? A-Okay died in a bar! Haha! You know, bars are not known to be places for healthy behavior. I bet you spend a lot of time at the bar because you are overweight! Your blood probably consists of 90% beer!