fullbacking 

driving one's car close behind another's with the hope that he will change lanes, thus clearing the road for those behind you

We were fullbacking the whole way to school for some silver Ford.

fullbacking by PooperScooper12345987 July 31, 2012

fullback grind

When you're fat and you're tryna flex that you're losing weight, with out telling people you're fat

Guy 1" I'm starting the fullback grind"
Guy 2 " I did that last year"

fullback grind by Big Juice Daddy May 6, 2018