A baby raised on the highway we’re most accidents happen. They walk back and forth along the highway searching for their non-existent parents, and are incapable of aging.
Jim: BRO HELP!! IM ABOUT TO CRUSH A HIGHWAY BABY!!
Phineas: Do it.
The type of insult you give when wanting to insult somebody who's life has revolved around an adoption family. When your mother and father don't love you enough, or cannot financially support the family because of you so they drop you off on a highway. Commonly used on Call Of Duty
Hey~ Your such a highway baby
You're a highway baby