President Pranab Mukherjee donned the hat of a teacher on Friday and gave lessons in Political History to XI and XII graders of a Delhi school on the eve of Teachers Day.
Taking a trip down the memory lane, President Pranab Mukherjee on Friday said he was an "unparalleled naughty boy" who used to trouble his mother, as he credited her for all the success he has achieved.
India has suffered the brunt of terrorism, including that of the cross-border variety, he said.