The Incident.
The great shmutz on the shirt incident.
Argh! My shirt. It is ruined!
“What that tiny bit of shmutz?
“Really, get over it. It’s tiny”.
“Hardly noticeable, hazard of the job”.
“In all seriousness, you should go back to your station, shmutz and all.”
Meanwhile, business as usual at the “coal” face.