A woman shared a life hack that left many people dumb-founded.

Sanne Vberkel, from the Netherlands, first posted the tip three years ago after learning the interesting feature in the car.

"I was today year's old," she wrote in the six-second clip, which has now been seen more than 7 million times.

READ MORE: Savvy woman uses homemade hack to fix dent in car when she's strapped for cash

The viral video has recently resurfaced on Twitter and it got people saying the same thing.

Sanne's viral life hack video resurfaced after a viewer shared it on Twitter
Sanne's viral life hack video resurfaced after a viewer shared it on Twitter

In the footage, Sanne reached to the grab handle above her seat and pulled it down.

She then flipped a bit of plastic cover down to lock the handle so it won't always needed to be pulled.

Some viewers were so stunned that they had to rush out of their home to check the feature in their car.

"Why don't these come with an instruction? I didn't know until now!" one said.

Another simply wrote: "42...and choked."

She found out a 'hidden feature' of the grab handle above her seat
She found out a 'hidden feature' of the grab handle above her seat

"Because of this video, I broke it in the car and dad doesn't know it yet..." a third confessed.

Others said they knew about the trick when they got bored in the car.

"I've been doing it since I was four," a person said and another echoed: "I remember being a small child in the back seat of my parents car doing this."

Some believed the purpose of that is just to cover the screws that keep the grab handle in place.

She flipped the cover down and locked it in place
She flipped the cover down and locked it in place

"That's not what they are designed for, but it's okay and most of them can't even hold it sadly," one user tweeted.

And another explained in details, saying: "There’s a reason they’re sprung loaded to close.

"It’s to minimise injuries during an accident. A flushing fitting handle will do less harm then an outstanding one."

A third added: "Folding those things back and forth will just fatigue the plastic and eventually snap it off.

"It’s a cover for the screw, nothing more."

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