Though used commonly like "scared the bejeezus out of me", Bejeezus is commonly associated with
Billie Joe Armstrong, the lead singer of the band Green
Day. It works in tandom with his signature performance pose of standing straight up with arms straight out, appearing similar to a crucifix.
It is also Billie Joe's "description" for his Instagram. It is commonly used within the fans, (
American)Idiots, as self titled as a sort up rallying together term, mostly used as a hashtag.