Can people really eat a Big Mac in one bite?

Some says they could not close their jaw when they tried to take one bite of the whole Big Mac. What happened?

This is a phenomenon called jaw dislocation, caused by opening the jaw too wide. When jaw is opened too wide, the jaw joint and the joint disc in between bones is forced out of place. When the disc is forced out, the pathway to close the jaw is blocked so the mouth cannot be closed.

Returning to the topic, can we really eat a Big Mac in one bite? Normally, our jaw opens with a range of 40-60 mm. While the Big Mac is around 70mm in height normally. Well then if you squeeze it hard, a man with large jaw range may be able to take a bite of the whole Big Mac in one go. Anyway, please do not try this and stay within your jaw range, do not push too far….

有人曾經吃巨無霸時，開口一咬卻合不了口，發生甚麼事？

其實這是顳顎關節脫臼，即是「甩牙骹」。這是由於下巴張得過大，導致連接上下顎的關節及關節中的軟骨移位。軟骨移位後，正常合起口的動作便被阻礙了，所以口就合不上了。

言歸正傳，我們可以一口吃下一個巨無霸嗎？正常我們的下巴可以張開40-60毫米，而巨無霸身高大概70毫米。如果硬是吃的話，口大的人大力掐著，勉強還可以的，但為了你的健康還是不要胡亂挑戰下巴的底線了。