It might be the things I’ve seen on 4chan back in the day. I remember right after that ISIS terrorist attack in Paris I saw a thread where someone shared they were thinking about strapping a bunch of fireworks to their chest, going to the candle vigil, tearing open their coat and yelling “allahu ackbar” as a prank. Later on I heard in the news about someone doing that exact thing. I found an article about it.

Seen quite a bunch on Yahoo Answers back in the days…