John Stamos didn't pull any punches while talking about his close friend Lori Loughlin 's estranged husband, Mossimo Giannulli , during an appearance on the Good Guys podcast on Oct. 20, RadarOnline.com can reveal.

"He's a terrible narcissist," the Full House alum said of the 62-year-old fashion designer, adding that it was Giannulli's fault Loughlin was indicted in the Operation Varsity Blues college admissions scandal in 2019.

"I know for a fact it was all him," he said, noting that his former costar went to "f--king prison for this a**hole." Article continues below advertisement

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A seething John also blamed

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