Protesters at a rally against Kluang MP Wong Shu Qi resorted to mocking her with vulgarities during a speech by Umno Youth chief Asyraf Wajdi Dusuki.
Playing on her name, the crowd called the DAP lawmaker "Wong P**i", a vulgar Malay term for female genitals.
The protest was streamed live over the Umno Tebrau Youth's Facebook page.
More than 50 people had gathered outside Wong's office in Kluang to protest against the DAP lawmaker following her use of a "pornographic" book as an example of texts written in Jawi/khat.