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

A person is seen attempting to suppress their laughter during a serious event. Their lips are firmly pressed together, desperately trying to hide the smirk that threatens to reveal their mirth. Their cheeks are puffed out, filled with contained giggles. Eyes are watering slightly at the corners from the effort of holding in their amusement. The atmosphere around them is gravely intense, with the surroundings painted in muted tones, suggesting a somber gathering. They are located in a room filled with individuals dressed in formal suits