1.   Just an adolescent prank?

2.   The disgusting adolescent pranks of these million-dollar-a-year traders drove Mark Anderson out of what he thought was a bright new career.

3.   Why has an industry with the potential to enrich our lives sunk into a soul-deadening wasteland of cartoonish violence and adolescent pranks?

4.   There are speculations that the blasts are nothing but adolescent pranks.