When your fucking balls are inflamed, whether it be due to recently acquired HIV from constant unprotected pummeling of your fellow male neighbor's asshole every weekend or simply torching those shits after a nice and proper kerosine lathering or even both.
Guy #1: Boi why the fuck you got ya hands down ya pants right now!?!? We're at fucking Disneyland and I'm about to call security!
Guy #2: Sorry my balls are just itching since last night.
Guy #1: ...Come again!?!?
Guy #2: I said I got a bad case of FIREBALLS!!!
Guy #1: Oh...what were you indulging in maximum faggetry last night?? Or did you just set them on fire manually?
Guy #2: Would you think me a disgusting human being if I said both? *teasing tone*
Guy #1: SECURITY!!! *blows rape whistle*
When two or more red heads come together to fulfill their sexual desires
Damn zane and mason just got with that girl to have a statue of fireball.
When you pour gas all over the girl, then set her on fire while you bang her.
Last tuesday that one guy from down the street killed his wife while doing The South African Fireball.
Someone who is amazing at football or any other ball sports.
Ben: Have you seen his tricks? He has awesome skills.
Otis: Yeah he's a fireballer!
The act of shoving a flaming torch up your partners ass and using the ashes as lube
Next Thursday i'm going to Wisconsin Fireball the fuck out of you Miranda.
When a chick with the clap licks your balls and your balls start burning.
"Damn, Ashley gave me an Arizona Fireball. It burns when I pee."
Fireballing; The act of lathering your testicles in hot sauce and inserting them into another's anal cavity, this will create a burning sensation in their anus.
"Me and Chase were fireballing yesterday, I think we might try carolina reaper sauce for an extra burn!"