In an exclusive interview published by local Chinese daily Nanyang Siang Pau today, Nazri lashed out at MCA, saying the party has been putting the blame on Umno for its own failure to regain Chinese support.
He challenged MCA to quit BN if it was not happy, instead of "scolding Umno every day".
"MCA is like a wife who keeps complaining to outsiders that she has been detained, sexually abused and denied food by her husband, but she refuses to divorce."
Nazri also warned Chua not to act like a "Chinese hero", shoring up his reputation by condemning Umno.
He even poked fun at Chua's sex DVD scandal, saying the latter would not be welcomed by voters as his private part had been exposed to the public.
"... has been viewed by all people, you think the female voters will support him?" Nazri said in the Nanyang interview.
He did not spare another BN component party, Gerakan, either, saying its situation was worse than MCA's because Gerakan "is a party without grassroot".
In response to this, MCA vice-president Gan Ping Sieu said Nazri's statements reeked of delusion, amnesia, inertia and arrogance.
"It is such statements from a senior member in Umno that will alienate the Chinese voters, including MCA members, just as the community is starting to show signs of returning to the BN fold under the prime minister's leadership.
"I am worried that the timing of such arrogant remarks will affect BN's chances in the coming Sarawak polls, especially in Chinese seats where we can expect tough battles," added the deputy minister for youth and sports.