When a chef working a big rush cuts one of his fingers and doesn't have time to get a band aid.
He takes the cut and cauterizes it on the flat top, then calls for a shot of alchohal to line, sticks the wound in it to sanitize and takes the shot straight for the pain. Then keeps working.
The last shot you'll ever need, under The Patient Protection and Affordable Care Act. May contain lead and/or copper, will leaves trace GSR at the injection site.