My knowledge of decorum tells me this:
Respectability is paramount!
Solemnity and sobre steadyness:
No qualities compared to these ones count!
If man would gain approval of his peers,
Consideration must be fully paid;
Know this, ye flighty privols, that your fears
So chill are true! The stern game must be played!
Ebullient cheer's a sin! Enjoyment's wrong!
Loud laughter looks all rude, so cut it out!
Let all your breath vent moans of angst, not song;
And never smile or grin, but only pout.
Regardless of the rules, one man remains
So cheerful as to laugh away life's pains!