When you accidently press the send button before you've finished typing the full message. Can occur while texting or email.
Guy 1: "Oh, man I just texted my girlfiiend that "I'd love to have a b"
Guy 2: "What?"
Guy 1: "Yeah, I didn't get to finish the sentence cause I accidently had a premature ejacusend. I was going to tell her I'd love to have a beer with her. "
A matador (bullfighting athlete) who is concerned with defense from stray semen emissions. He waves a modified bullfighting cape that has a bullseye printed on it, taunting his nemesis to dare to spray.
The ejaculadore certainly protected the audience in the front row from that straycumshot!
2) Masturbating to online porn early in the morning.
1)Aaron was pounding his favorite Slunthore's cockgarage when his Mushroom Cloud was EjacuEARLY; though he blamed her lack of cuntrol for his early nutbust.
2)After surfing some E-porn in the morning, I had to EjacuEARLY.
A realization you obtain after ejaculating to something you normally would not ejaculate to or normally think is unappealing giving you a sense of remorse.
After meeting the new lunch lady Joey went into the restroom stalls to wank one off real fast only to come back and see that he had a ejacurealization and that the lunch lady was horribly disturbing.