I have a question about the use of these dialog snippets or quoted parts and if I should separate them with commas: To call his former friend “sergeant” felt weird. He veered left and clomped toward the area marked “Trespassers Will Be Prosecuted.” He could almost read “I'm bored” in his friend’s glazed eyes. He echoed the melody his older brother called “banal, sugarless ear candy.” He found a door marked “Broom Closet.” She mouthed the word “wow.” The warrior screamed at him to “shut up and take it like a man.” He pointed at the man who stopped moving, stopped threatening, stopped repeating “ow.” Wait, did he say “dead”? The message “Shutting down” stretched across the monitor. Last year their motto had been “Win Big.” Or maybe the “ah, ah, ah, ah” he repeated. Should I put a comma before the quoted part? Some of these are more with the flow of the sentence, so it seems strange to separate it with a comma, but maybe I should. For instance: He could almost read, “I'm bored,” in his friend’s glazed eyes. Does this need commas if it's part of the flow of the sentence?