A feeling of happiness so intense it brings one to orgasm.
That movie was so awesome! It was pure ejac-elation.
The instantaneous and short-lived feeling of unbridled joy which accompanies ejaculation.
Guy 1: Mate you look delighted, what's the good news?
Guy 2: It won't last bro, ejac-elation is short but oh so sweet.
Guy 1: Dude, too much info.