??? ????? ?????? - Where is the angry dragon?

يَعيشُ ياسِر العَديدَ مِنَ المَشاعِرِ كُلَّ يَوْمٍ. لَكِنَّ أُمَّ ياسِر تُحاوِلُ مُعالَجَتَها بِذَكاءٍ ومَرَحٍ مُحاوِلَةً رَسْمَ ابْتِسامَةٍ عَلى وَجْهِهِ في كُلِّ مَرَّةٍ، إلّا مَرَّةً واحِدَةً...

فَماذا حَدَثَ يا تُرى؟

"Yasser" lives through many emotions every day. But his mother tries to help him through in an intelligent and fun way, so she can place a smile on his face each time, except this one time...

What happened then?