A vicious, highly infectious disease in men that is spread when the groin region gets intentionally farted on by another person (not necessarily one with fartballs). Common symptoms are denial and irrational aggressiveness towards people named Michael.
Bob: Hey Michael, I heard Joey has fartballs
Michael:
Joey: I do not have fartballs! Fuck you, Michael!
by Jack Fitzy February 16, 2022
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1. the cupping and lifting of one's own flatulence directly into another's face.

2. when a male human being neglects to cleanse his scrotum; leaving a lingering parmesan cheese type odor that is unmistakeably his own.
1. dude, stop throwing your fartballs in my face

2. oh my god becky, it was the worst case of fartballs I have ever smelt in my life.
by oogaboogachoo September 1, 2010
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When you see someone heating something in a microwave at work, home or the gas station you cup your hand around your butthole and fart. With the fart trapped in your hand you open the microwave and drop your fart. Some variations have the fartballer screaming FARTBALL at the fartballed. Others live with the quiet satisfaction that only an anonymous fartball can provide.
"I used to hate my boss. Then I started fartballing his afternoon coffee and I feel better."

by i am fartball April 22, 2009
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