Sylvester Stallone's daughter reveals brutal thing dad did to boyfriend after he went to shake his hand

Sylvester Stallone's daughter opened up about the 'awful' thing her father did to her high school boyfriend when they met for the first time.

As we all know, Stallone rose to fame with the 1976 classic film Rocky, and whether you've seen it or not you'll recognise its famous montage music.

It did also introduced the sports training montage to the film industry, and it has stuck around almost 50 years later.

Stallone went on to star in its many sequels, as well as other titles such as First Blood and Paradise Alley, cementing his name in Hollywood folklore.

His daughters revealed how intimidating he was to their boyfriends (Kevin Winter/Getty Images)

From his several roles, one thing can be taken from the kind of person that Stallone is - you do not want to mess him.

And this message was clear to many of the boyfriends that his three daughters were coupled up with over the years.

Sophia, 28, Sistine, 26, and Scarlet, 22, will have faced the struggles if they dared to bring anyone home, but it was the former that has shared the most entertaining story from her past relationships.

Sophia and Sistine sat down with Lauryn and Michael, hosts of the The Skinny Confidential Him & Her Show in an episode titled 'Sophia & Sistine Stallone On Their Famous Family, Dating Apps Ruining Love & Growing Up In LA!'

When asked if there was a lot of pressure on having your potential father-in-law being Rocky Balboa, the sisters agreed, saying 'it's a lot pressure'.

Sistine recalled: "Our favourite story is Sophia's first boyfriend from high school, (when he) came over to meet the family for the first time and he went up to shake his hand and my dad grabbed his hand, pulled him in, and said 'next time, shake my hand like a man."

Chills.

Stallone grabbed his hand (Tasos Katopodis/Getty Images for The Dwight D. Opperman Foundation)

Anyone in their right mind would feel a bit scared, as co-host Michael looked to the crew and said 'oh jeez'.

Sophia recalled: "I wanted to kill him, cause I'm the oldest, it was awful!

"From then on out, every single day, he would grab my dad's hand, he would grab my hand just to practice," she revealed.

Sophia clarified that they're no longer together, as Michael said that any guy entering the family would essentially be going through a 'trial by fire' when meeting their Hollywood legend father.

Co-host Lauryn then asked about their younger sister's boyfriend, and why their dad likes him so much, to which they said it was all down to confidence and intelligence.