Paula Orbea started the online petition on Friday after her 11-year-old daughter saw the message on a van in the scenic Blue Mountains west of Sydney during the school holidays.
It has so far been signed by nearly 25,000 people.
“I agree with free speech, but where is the line? At what point do we say no, that’s not morally correct?” she told the Australian Broadcasting Corporation.
“We’re not the enemy for saying we don’t like to be referred to as sluts, that we all are begging (for sex) and hyper-sexualised.
“We have the right to say we’re not happy with that.”
In her petition calling on Wicked to “eliminate misogynistic and degrading slogans and imagery”, Orbea said her daughter had been upset by the message she saw.
“It is inconceivable that Wicked Campers choose to not only write the misogynistic ‘joke’ but also then publicise it through their moving, billboard vans,” she said.
“Shame on them.”
– The West Australian