Bosnian boy performs flipping, brick-smashing feat

March 28 (Reuters) - A Bosnian teenager has performed an impressive, if painful to watch, stunt, breaking 111 concrete blocks with his head in a mere 35 seconds. Forward flipping his way down a line of 20 stacks of six blocks each, Kerim Ahmetspahic, a young taekwondo martial artist, smashed the blocks with his head in front of a cheering crowd in the Bosnian city of Visoko at the weekend. He appeared to falter on the 18th stack, but then recovered and finished to loud applause. Ahmetspahic received a certificate recording his achievement and thanked his parents, his coach and his friends for helping him succeed in the unusual accomplishment. (Writing by Karishma Singh; Editing by Paul Tait)