Babyonboard

4 clues
'80s car decal slogan
Rear-window alert about an infant
Sign of parenthood in the mid-1980s
Gerber reports on frequent corporate changes
Similar answers:
Babyoil
Babyoilcomefrom
Babyom
Babyonboard
Babyonemoretime
Babyontheway
Backgammonboard
Braidingonboard
Bulletinboard
Demonboard
Doesbabyoilcome
Drainboards
Electionboard
Heronboard
Humponboard
Inboard
Mexicanboarder
Onboard
Onboardship
Signboard