Dada-Doo paced the waiting room, until the nurse told him of the good news. He went to Mumsy-Doo in her room, as she held Scooby-Doo. Scooby's first words were "Scooby Doo", which was what they decided to name him.
The 13 Ghosts of Scooby-Doo
Vincent Van Ghoul tried to transport Scooby-Doo away to safety from Time Slime, but the time scepter Scooby was holding at the time only knocked him into a time vortex. The vortex then showed him his birth.