Kieran Culkin has "no idea" how his mother managed to bring up eight children.

The 42-year-old actor - who is married to Jazz Charton and has Kinsey, five, as well as three-year-old Wilder with her - grew up in a poor household full of children and "can't believe" some of the things he has to do to get through the day now that he is a father himself.

He told The Guardian: "Us siblings, we're already cooked, we're baked. My godfather has this thing, he goes: 'I will fully indulge anybody that wants to complain about their upbringing and childhood. I want to hear everything about that. And you can completely blame your parents for everything until you're 30, and then figure s*** out.' He's oversimplifying it, but I like that.

"If I wanted chocolate milk light, but my brother wanted more chocolate, and my sister wanted hardly any, she would make it those different ways. I love that s***!

"How did my mom [Patricia Brentrup] do it? Yeah. And I have no idea. So, 15 to 20 kids in the house. I can't believe I'm back at the grocery store sometimes three times a day.

"My mom had to do it on coupons. She would get cheap liver at Key Food, two giant gallons of milk, all that. For me, getting them to sleep is enough."

The 'Succession' actor - whose most famous sibling is 'Home Alone' star Macaulay Culkin - has made a rule for himself that he will never be away from his family for more than eight days at a time because he is "terrible" at being separated from them.

He said: "I'm not good at being separated from my family. I'm very much terrible at it. "