An older woman brings a big metal bowl to her grown son seated with back to camera. The bowl is to catch the blood when he slits his wrists. Her assistance is all very matter of fact. Scene cut to close up of trash bag set tidily out on the street for pickup which presumably contains his body.
This would have been late 60s or early 70s. I think it was in B&W (but can’t swear to it) and was before cable tv so networks or an indy station in NC. Could have been from a movie or TV episode.