The Rock aka Dwayne Johnson was not always so tough

THE ROCK, aka Dwayne Johnson, must have learnt the hard way that it is tough to appear intimidating when you are wearing mum jeans and a bum bag.

THE ROCK, aka Dwayne Johnson, must have learnt the hard way that it is tough to appear intimidating when you are wearing mum jeans and a bum bag.

The actor and pro wrestler shows he has a sense of humour by posting this photo to Instagram.

He pokes fun at the bum bag (or fanny pack as Americans call them) and his look.

“Fanny pack and lean take it to a whole other level... #90sRock #WTF #BuffLesbian,” he captioned the picture.

While Johnson is well-known for being a goofball at times, the look is a far cry from his usual bare-chested glory.

He is currently filming San Andreas alongside our very own Kylie Minogue.

He also just finished filming Fast & Furious 7, the last film starring Paul Walker, which wrapped production last week.