Why are you trying to stifle your laughter in a serious situation

A person is struggling to suppress their laughter during a solemn, formal meeting. They are seated amongst a group of people, all with stern expressions, in a room with paneled walls and a large conference table. The person is trying to maintain a straight face, their mouth in a tight line, their eyes slightly watery, and their face flushed. They are clutching their hand to their mouth in an attempt to silence their laughter, their shoulders shaking slightly.