Kebab RightSide Detector

Three months ago, a group of young engineers at Minnesota were going to have a delicious kebab dinner. Long time ago they had not seen each other, so they started to talk about how was life going for them.

After a while, kebabs arrived. They looked carefully at them. Then, one of them said "you cannot possibly know which is the front side of the kebab". This three friends opened hasty their kebabs and, repently, the same guy noticed that he had opened it by the wrong side. "F*CK!!!" he yelled. "I'd wish to have an app that tells me the right side to open my kebab, dude." They looked each other with an enthusiastic look and that's when they knew they were going to develop that f*cking awesome app... I was just sitting two meters away from them, but close enough to steal them this dumbass idea. I don't give a damn, after all...

NOW YOU CAN KNOW IF YOU'RE OPENING YOUR KEBAB BY THE RIGHT SIDE!!!