Can be used as a noun or a verb, i.e. "ghost loaded".
John: "Sorry boss, I forgot to wash my hands after my mid-morning whack. I think I got ghost load on that Rep from Anderson Corp. when I shook his hand."
Jack: "It's mistakes like this we can't afford to make, John! You're fired!"
"Let's go to the club and go ghost loading."
Since the testicles can only produce so many sperm per day, your balls eventually runs out of it when you orgasm too often without resting properly.
Although blowing a ghostload doesn't feel like a real accomplishment for the participant(s), it does however have the advantage of no afterwards clean-up.
Friend 2 : That's awesome.
Friend 1: Yes.
John: Dude! What the hell are you doing jerking off over my sleeping grandma!!
Matt: Jeez, relax man, it's only a ghostload.
John: Oh, sorry, my bad.
Matt: no problem, high five!