To be used when something is amazing/shocking to emphasise how you feel. It is not the same as Oh My God which would be a bigger deal, and really, doesn'tsound as good. Can also be shortened to OMJ.
It's someone who's a fawning person. But it's a bit rough, since when is Jesus associated with creepiness? Sure, he hung out with lepers - but that's not creepy. Social suicide maybe...
Gay jesus a gay (usually male) individual who is most likely in a chorus or art magnet and never shuts the fuck up leading to a flock (or the correct term) herd of fags surrounding them at all time and treating them as above everyone else
"You know that fatfag gavin in the chorus magnet who never shuts the fuck up?"
"Yea they treat him like hes gay jesus or some shit"