be·je·sus also be·jee·zus 
(bĭ-jēzəs)
(bĭ-jēzəs)n.
Slang
Slang
Used euphemistically for intensive effect in idioms such as scare the bejesus out of (someone) for scare (someone) very much.
interj.
Used to express exasperation, annoyance, or surprise.
[Alteration of by Jesus.]