1.InterjectionUsed to express surprise, annoyance, dismay, or anger.
2.NounUsed for emphasis, similar to crap, shit or wits.
"The bear scared the bejesus out of us.; He said you confused the bejesus out of him.; This old lady just completely slapped the bejesus out of him.; That screaming, flaming skull in the closet totally scared the bejesus out of me!"