He'll grill aides on topics until it's clear they don’t know the answer to a question — a routine that some see as meticulous and others call "stump the chump" or "stump the dummy."

Yeah fucking right. The old demented pedo can barely read a teleprompter or walk fifty feet without falling. He's clearly not mentally capable of grilling anyone on any subject, besides maybe which adult diapers offer the best protection against leaks.