[b-] Bart Simpson is [2] inside the lobby of the [-o] office building, building a 甫 trellis with a 寸 caliper and 十 cross as part of a prank. Right before one of the security guards comes in, he hides behind one of the decorations. He knew he was coming because Bart is 博 well-informed about everything that goes on there, having gone there to do pranks so often. When the guard isn't looking he throws the 甫 trellis at the guard and runs away.