Px brief
Assuming you're not going out for the first time, doing aerobatics, or going over water, my last boss hollered out WITH ONE BREATH the following as he fired up, pulled his seatbelt on and taxiied out:
"Hey, my name is Tom, just like it says on the tail. Keep those seatbelts on at all times, there'll be no smoking, drinking, or shooting at the pilot. The ELT is located together with the survial gear in the rear of the aircraft and operates automatically, the fire bottle is under my chair, and if you get curious there are briefing cards in the seat pocket in front of you. We've got three exits, two at the front and one at the rear, just pull on the handle and push out on the door. If you need anything, my name's still Tom and have a nice ride!!