Dexter's Laboratory (1996)
S3E9 The Grand Daddy of All Inventions
Dexter's mom brings him over to visit his grandfather. Initially, he imagines it will be a tedious day, but everything changes when he stumbles upon his grandpa's hidden laboratory!
Dexter's mom brings him over to visit his grandfather. Initially, he imagines it will be a tedious day, but everything changes when he stumbles upon his grandpa's hidden laboratory!