A combination of the words "explosion" and "orgasm".
To experience a very good, very fast orgasm, especially happens after you orgasm after being deprived from sex/masturbation for over a week.
My Wife's parents spent the week at our house and I had the worse case of blue balls ever, but the explogasm she gave me when they left was well worth it.
Whenever your orgasms tend to squirt more than a few inches in the air, if you're male. If female, it makes a very large splash. Can be compared to a firecracker, to a certain extent.
2. A Flavor Explosion that causes an orgasm in one mouth without the balls on ones chin.
3. A feeling of ecstasy so great that ones molecular structure is shredded, in a flashy boom of fleshfetti.
1. I know I said you could fuck my woman, But I didn't say it was could to plaster her to the wall with your Explogasm!
2. Dude, That Pizza was so bomb I feel like I should have had balls on my chin!
3. Timmy nooo! Would you look at that?