The stand-up comedian, who used to star on panel show Talkin' 'Bout Your Generation alongside presenter and fashion designer Rose, has reignited their public spat from last year by accusing her of doing nothing.
When asked what he thinks of Rose, Thomas told National Features: "Ugh. It's pretty well-documented how I feel about her. I'm mostly confused about how everyone knows who she is. Like, what does she do? But I'm aware that me asking that might result in people asking what I actually do and I'd be lost."
The Aussie star also referred to his other Talkin' 'Bout Your Generation co-star Shaun Micallef as "a fat idiot loser douche", but then said: "Not really. I think he is nice and very funny, but that isn't entertaining now, is it?"
Rose and Thomas first fell out when he referred to her as a "loser" on Twitter after she allegedly left him with the drinks bill during a night out. She later said that she was very "upset" by his comments and he apologised, but then targeted her in a comedy gig this year, calling her a "c**t" at least ten times during his routine.
He was recently voted one of the 25 most influential gay Australians, but he said: "I hope my influence is minimal, I really do. The last thing we need is more of me. What a nightmare."
Talkin' 'Bout Your Generation airs on Sundays at 7.30pm and on Wednesdays at 8.30pm on Channel Ten.