You’re supposed to say the first part of this to all passengers, especially examiners. The last part just makes sense to me.
As PIC I am responsible for the safety of the passengers and the safe operation of the aircraft. Please keep your seatbelt tightly fastened at all times during the flight. The harness slides into the buckle and by pulling on the buckle you can release both. You can remove the shoulder restraints during the flight, but I don’t recommend it. You can adjust your seat now, but do not adjust it during the flight, unless you ask first, because it can slide rapidly forward or backward. The door latches at the top. I’ll make sure it is latched before we take off. If there is an emergency and we need to leave the aircraft, push the latch forward and then pushing up on the lever in the door to open it. Do not leave the plane while the engine is running. Do not touch anything during the flight, especially do not grab the yoke to steady yourself if we encounter turbulence. Yours is connected to mine. The only thing in the front that you can touch is the air vent on the side of the door. If you are hot or starting to become airsick, turn it so that the outside air streams over your face. Look ahead at a point. Airsick bags are in the glove compartment. We are flying under Visual Flight Rules, which means that we are responsible for seeing and avoiding other aircraft. If you see a plane, please point it out to me using the hands of a clock as reference. We also get help in locating other aircraft and get instructions from ATC over the radio. If you hear talking on the radio, stop talking.
§ 91.107 Use of safety belts, shoulder harnesses, and child restraint systems.
(a) (1) No pilot may take off a U.S.-registered civil aircraft…unless the pilot in command of that aircraft ensures that each person on board is briefed on how to fasten and unfasten that person’s safety belt and, if installed, shoulder harness.
(a) (3) …each person… must occupy an approved seat or berth with a safety belt and, if installed, shoulder harness, properly secured about him or her during movement on the surface, takeoff, and landing.