Top Definition
When a group of people get together and run their mouths and raise awareness of how shitty someone/something is.
Jane was mad at Rachel so Ronald, Calle, John and her had a Hate-A-Thon
by kmhiheart December 18, 2010
1 more definition
Hating on several things at once for an extended period of time.
He's on a hateathon.
by coldrisk October 12, 2010

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