clean shirt

slang for someone who is straitlaced and decidedly not "street", someone wearing a dress shirt

Thug(addressing an upstanding citizen): Fuck off clean shirt!

another clean shirt ought to see you out

(phrase) | to appear quite sickly, almost to the point of deathly ill-looking

“you look very ill, another clean shirt ought to see you out. you look as if you'll soon be dead”