The popular locker room gag of putting Tiger Balm (or some other heat inducing ointment) into someone's athletic supporter. The ensuing extreme discomfort of the victim can be quite hilarious.
Back in high school, my friends and I laughed all day long after giving a fireball to some jerk who always hassled the retarded kids. Seeing him stagger around the locker room, grabbing his dick and screaming "My balls, my fuckin' balls!" was priceless.
by Dan Chen November 01, 2003
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when you try to straighten your pubes but end up setting your dick on fire
did u see ruben’s dick last night, it looked like it was a fireball
by mike dorik November 24, 2020
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when your taking a shit & your ass really hurts when a big piece of shit is coming out
man i just had fireball now my ass really hurts
by luisrubioXD November 26, 2011
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When you and your bro’s are chilling by a campfire and it’s cold so you warm your balls together.
Hey bro wanna fireball at the father-son camp out tonight?

My stepsister caught my friends and I fireballing earlier.
by Macapritto March 21, 2020
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A slang tearm used when an angry female, during menstration, pulls out her bloody tampon and throws it at another person's face.
When Betty got mad at her mom for sleeping with Betty's boyfriend she threw a fireball which landed right between her mom's eyes.
by Stymie B January 23, 2007
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a boy (usually jewish) who has red hair, lots of freckles, and red pubic hair
Oh look at that kid, he has mad fireballs.
by mperrs January 30, 2005
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Cunnigulus until reaching orgasm, female oral sex during menstruation and exchange of fluids from partner to partner (esp. blood)
She gives a good fireball
by Jason February 26, 2003
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