Gatorback
A large line of cocaine. Looks like an alligator's back jutting out of the water.
Person 1: Dude I just got an ounce, lets set us set out some gatorbacks and ride out.
Person 2: Aight.
Person 2: Aight.
Gatorback
A damaged piece of tire, typically found on a motorway.
Whoa, check out that gatorback! Someone had a nasty blowout!