I never watch MacGyver television series until recently on its premiere telecast for this year's season. Mac was in a traffic jam on the way to University where he works as a laboratory professor (maybe he is a Physics instructor or what) because he was late already he had his lesson aired aided by modern technology gadget to his class in his classroom. When he arrived at the classroom, the students didn't even notice that he was there in the room because his students were busy staring at their cellphones and laptops, and one student was "busy sleeping." He was there in front of the class in the classroom and nobody was aware of his presence. So, he poured a small portion of chemical in one of the laboratory flasks and then BOOM))) Yeah, that's it EXPLOSION!!!!!!!!!
That wakes up everyone in the classroom.
Strange and fascinating how explosion sometimes do wonders for those sleepyheads.