Bosnia teenager breaks concrete with head

This boy can smash concrete slabs with his head. In just 35 seconds, he smashed 111 concrete blocks. A taekwondo martial artist, Bosnian teen Kerim Ahmetspahic can forward flip his way down a row of stacked blocks wherein each stack contains six concrete blocks. The acrobatic stunt seems to have little effect on the 16-year-old who appears to be in top form at the end of his headbutt. Though he seemingly falters on the 18th stack, he recovers to finish to loud applause. Ahmetspahic received a certificate recording his achievement and thanked his parents, his coach and his friends for helping him achieve the unusual accomplishment.