Angry young man: He clenched his fist tightly, giggled loudly and stared round, waiting for others as if to eat them.

Sad old man: (1) He sat by the window, staring into the distance, his eyes full of melancholy.

(2) He struggled to remove his rickety body from the wooden bench, took out a handkerchief from his pocket, trembled and wiped the tears from the corner of his eyes, muttering: It's windy again.