Arnold Schwarzenegger Reveals He Once Threw Son Patrick's Mattress into Pool to Teach Him Lesson

The actor previously discussed his strict parenting style with PEOPLE

Arnold Schwarzenegger is one strict dad!

The Austrian-born actor, 76, discussed the dramatic way he kept his son Patrick Schwarzenegger in line as a boy while discussing his parenting style during an appearance on Jimmy Kimmel Live! Monday.

“For the way I grew up, I was lenient. But I think for American standards, I was probably strict,” Schwarzenegger, who was on the show to promote his new book Be Useful: Seven Tools for Life, confessed to host Jimmy Kimmel.

“My son did not make his bed. He had his nanny make the bed, which was not allowed,” said the Terminator star. “So I came in one time and the bed was made so immaculately that I looked at it and I said, ‘Patrick, did you do that?’ And he said, ‘No, I didn’t.' So I grabbed the mattress, opened up the doors, and threw it off the balcony down into the swimming pool!”

“It gives an example. So he had to, kind of, drag it up, the mattress and the pillows — I threw everything out there,” he added.

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human-interest stories.

Related: Arnold Schwarzenegger Opens Up About Life, Family and Work Now: 'I Feel Good Where I Am' (Exclusive)

Schwarzenegger has five children: Katherine, 33, Christina, 32, Patrick, 30, and Christopher, 26, shared with ex Maria Shriver, plus Joseph, 26, with Mildred Baena. The actor is also granddad to daughter Katherine's kids Lyla, 3, and Eloise, 16 months.

Amid the upcoming release of his book, the actor shared in an exclsuive interview with with PEOPLE that he instructed his kids to carry out cleaning duties at home, which included making their own beds, washing their own clothes and cleaning their bathrooms.

And the consequences have persisted into their adult years! As he told PEOPLE, "Katherine comes over with Lyla and she says, 'Lyla, I told you already not to put the shoes there. Keep your shoes on or you put them away, but you don't leave them there by the stand in front of the fireplace because you know what Daddy did? When I left my shoes there twice? The third time, he burned them in front of me and I cried.' "

Did he really burn her shoes? “Yes, absolutely," Schwarzenegger said with a grin. "Now she uses the same methods which she cried over and that she complained about.”

Related: Arnold Schwarzenegger Reveals How He's Changed at 76: 'I Think More About People's Feelings' (Exclusive)

In his conversation with PEOPLE, Schwarzenegger also recalled the bed-making incident, which he said occurred when Patrick was 9 and the frustrated dad tossed his son's mattress out the window.

"I opened up the door to the balcony, picked up the mattress and threw it down with the bedsheets, the pillows, everything. I said, 'Don't ever make someone come in and clean your room, clean your shower or make your bed,' " he said. "I said, 'Because I taught you how to make the bed.' "

Schwarzenegger also recalled contention with Patrick over his long, hot showers, telling his son, "It's over, no more showers. Five minutes, one shower, and then that's it and we're turning it off."

While the kids had strong reactions to his tactics growing up, the Kindergarten Cop star said over time the stories have become legendary in his family: "Funny enough, those kinds of things are what they bring up all the time with tremendous laughter and tell other people as a joke."

"It's the funniest thing when Katherine comes over, she loves bragging to other people about how bossy I was, how tough I was when she grew up and how she didn't get away with anything," Schwarzenegger added.

Be Useful: Seven Tools for Life is available Oct. 10 wherever books are sold.

For more People news, make sure to sign up for our newsletter!

Read the original article on People.