ANC Youth League leader Julius Malema is the "only factory fault amongst us", the Inkatha Freedom Party youth brigade says.

The youth brigade had taken note of Malema's comments at the weekend about the IFP and its president Mangosuthu Buthelezi, IFPYB chairwoman Pat Lebenya-Ntanzi said.

"While we find it flattering that Mr Malema would devote some of his time to the IFP at an ANC Youth League conference, we want to remind him that we are of the opinion that he is nothing more than an ill-bred brat with verbal diarrhoea.

"His behaviour is not only un-African, but crude by the standards of any culture, which makes him the only factory fault amongst us," Lebenya-Ntanzi said.

The IFPYB was disappointed that Malema's anger management classes "have not had any effect on his vulgar and offensive political rhetoric".

"We were hopeful that by going back to school for anger management classes, he would have been taught some manners, but his latest attack on the IFP proves that he is incapable of changing his ways.

"Mr Malema might not think that the IFP will ever reclaim the province of KwaZulu-Natal, but his style of politics - based on denigration and insults - is already yielding results for the IFP as ANC members turn their backs on Mr Malema," Lebenya-Ntanzi said.

"Prior to the start of the KZN ANCYL conference we took note that the ANCYL called on the IFP to learn from them on how to conduct conferences successfully.

"However, we have observed through the media that their conference registration process was utterly chaotic and now allegations have surfaced that the voting process was rigged.

"We want to state categorically that there is nothing we can learn from political amateurs," Lebenya-Ntanzi said.