TONY Abbott’s dad says his wife Fay gets “very upset” with the constant attacks on their PM son.

Dick Abbott, 90, was joined by the Prime Minister yesterday for a Father’s Day function at the Epping Club and admitted the negativity directed towards his son is taking a toll on the family.

“It doesn’t worry me but it upsets his mother,” Dick Abbott told The Daily Telegraph. “She gets very upset. There have been some issues ... there’s been a couple of times when she gets very down. You can see it on her face. She’s not happy.”

Mr Abbott said his son’s success was owed mainly to his mother, joking: “She’s got the brains.”

It was a joyous occasion for Dick and his famous son, celebrating a year in the nation’s top job.

He shook hands, hugged babies, kissed elderly women and posed for selfies with keen young Libs in a crowd of devoted supporters.

“I’m delighted my dad Dick is here,” Mr Abbott said. “I’m a person with strengths and weaknesses — the weaknesses are mine, the strengths are his.” Mr Abbott cut a cake with a “1” candle as “For He’s A Jolly Good Fellow” rang out.

Caringbah’s Maxwell Padmore, 7, managed to shake Abbott’s hand, explaining “he’s one of the most famous people in the country” when asked about his brush with the PM.