WATCH: Korean breakdancers defy gravity on S'pore hotel rooftop
Nothing defines heart-stopping action more than a bunch of b-boys performing death-defying stunts on the roof of what looks to be Swissôtel The Stamford in Singapore.
Gamblerz, a South Korean breakdancing crew, filmed an adrenaline-pumping video for telecommunications and mobile phone operator LG Uplus.
We're not sure if their stunts are real.
But they are definitely a known crew who have won a number of international championships since their 2002 breakout.
The video started out seemingly innocent, with the boys performing stunts at various spots in Bras Basah, City Hall and Raffles Place.
But they upped the risk factor (and our probability of getting heart attacks) by showing off their slick moves at the edge of the rooftop parapet.
That's right, you're looking at the gravity-defying move.
Warning: You'll very likely experience increased heart palpitations and occasional bouts of holding your breath.
Yes, it's that scary.
Sources: Dance Meets, Gamblerz Kill, YouTube