EE WAS WORKING TO REMOVE SUCTION HOSE FROM PUMP. AFTER UNSUCCESSFULLY TRYING TO SCREW IT OFF EE DECIDED TO CUT IT OFF. HOSE WAS MADE OF RIBBED PLASTIC. HE GRABBED LOWER PART OF HOSE WITH LEFT HAND & CUT LENGTHWISE WITH RIGHT HAND. POCKET KNIFE SLIPPED OFF HOSE & CUT LEFT THUMB CROSSWISE REQUIRING 3 STITCHES JUST BELOW KNUCKLE.