Sylvester Stallone explains why he tries to intimidate all of his daughters' boyfriends

There is no questioning Sylvester Stallone is one of the greatest actors of his generation.

From the likes of the classic Rocky films to the more recent Creed, Stallone really has completed Hollywood.

So joining the Stallone family surely must be a daunting task, right?

Perhaps in the vein of when you meet a celebrity for the first time and you are left complete starstruck and unable to mutter any words.

But for Stallone's son-in-laws, it is all bout the intimidation.

Alongside his wife, entrepreneur Jennifer Flavin, Stallone shares three daughters - Sophia, 26, Sistine, 24, and Scarlet, 21 - all of which appear in the reality TV series The Family Stallone.

Each of them have introduced their partners to Stallone, with them saying the Rocky actor is pretty menacing towards them.

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In a new interview with The Wall Street Journal, Stallone has explained why he comes across that way.

He said: "I know how these guys think. I happen to have been one. It’s nature, but I want to let them know. I say, 'OK, when you’re trying to kiss her, it’s like you’re trying to kiss me at the same time.'

"I’m very connected to my family, so if you do something that’s inappropriate, it’s like you did it to me.

"And there’s going to be an issue and it’s going to be a great deal of pain. I’m incredibly protective over my daughters, because I know it’s a dangerous planet."

He continued: "I don’t know how [women] do it, because you have to be on guard all the time. I mean, guys are so big and so strong.

"Why are women so cunning? Why do you think? How about self-preservation, moron?"

Elsewhere in the interview, Stallone was asked about his sense of humour, and he answered exactly how you'd expect him to.

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"I tend to be a little caustic in humor," he said.

He continued: "Like if you have nothing nice to say about anybody, sit next to me, like the old joke goes. I’m always trash-talking, and I love getting it back to me. What is the word I call it? Male-pattern badness."

And finishing off the interview, Stallone revealed the most important bit of advice he has received during his career.

"You don’t have to beat up on yourself. The world will beat up on you enough," he said.

"Give yourself a break. I try to really see life with the eye of the tiger and a real sense of humor. It’s not easy, but without humor, this is not a fun place."