- Lou: "Hey, kid! Whad'da do, jump ship?"
- Marty: "What?"
- Lou: "What's with the life preserver?"
- — Lou Caruthers to Marty in 1955
A life preserver is a device that is worn to aid in flotation in the event of falling overboard from a boat.
Skinhead declared Marty a dork for wearing a life preserver on dry land, much to the amusement of Biff, Match and 3-D, saying "Hey, Biff. Get a load of this guy's life preserver. Dork thinks he's gonna drown!"