A mom is suing Justin Bieber for $9.23 million, claiming the Biebs is responsible for wrecking her ears after screaming fans at a Portland, Ore., concert damaged her hearing.

Mom Stacey Alexandra Wilson Bettis of Wilsonville, Ore., is suing Justin Beiber, Island Def Jam Records, Vulcan Sports and Entertainment, and AEG Worldwide in Portland federal court for $9.23 million for expenses, pain and suffering and causing her to suffer loss of quality of life, severe tinnitus, hyperacusis and permanent disability and impairment to both of my ears, according to a copy of the lawsuit filing obtained by TMZ.

Bettis said she took her daughter to a July 14, 2010, Justin Bieber concert at the Rose Quarter in Portland and due to an unforeseen aspect of the show, I was injured by a sound blast that exceeding safe decibel levels.

I suffer hearing loss, severe tinnitus and hyperacusis in both ears, the mom said in her lawsuit.

Bettis said Justin Bieber set off a chain of events that damaged her hearing when the Biebs climbed into a heart-shaped gondola and was pulled out over the crowd, which led to Bieber's fans to scream too loud.

Mr. Bieber created a wave-like effect of screaming by pointing to various sections of the area, then enticed the crowd into a frenzy of screams by continuously waving his arms in a quick and upward motion, whereas I was struck by a sound blast, the mom's lawsuit says. The gondola that Justin Bieber was suspended in acted as a sound conductor creating a sound blast that permanently damaged both of my ears.

In her lawsuit, Bettis claims she had no reasonable way to anticipate the gondola could create a sound blast that would permanently damage my ears. Experienced promoters, sound engineers, managers and artists are responsible to maintain safe decibels at all times during their events.

Due to their negilgance [sic] and my subsequent inability to protect myself, my quality of life has been permanently reduced in addition to the injury, Bettis claimed.

Bettis is being slammed on Twitter by fans of Justin Bieber, or Beliebers, as they are collectively known.

Don't go to a Bieber concert and not expect it to be loud, wrote the @bieberarmy Twitter account. It clearly didn't affect the other thousands of ppl there.

So if Justin's concerts were 'loud and to painful to listen to' -- why go. Its that simple, said @HolaBiebs.

Latest Justin Bieber lawsuit is absurd, wrote @popcultini, adding a little bit of snark. If everyone sued over music that was painful to listen to, Rebecca Black would be in court for life.