Pressing this button will cause infinite calculations to be done by your device. This will cause the browser to lag: you can't scroll, you can't interact, you are eating up computing power. If no effect is seen, you can take a look at the timer above (we didn't pause it deliberately)! Your present tab is paralysed and you will find it difficult to close the present tab. After a while the page will display an "Aw snap!" error that shows the page took too long to respond.
Your most probable outcome