Busy Buddies

Busy Buddies is a 1956 Tom and Jerry cartoon directed by William Hanna and Joseph Barbera.

Summary
The baby is left alone with a sitter, and Tom and Jerry are raiding the kitchen and, since the sitter is spending all her time on the phone, watching over the baby, who seems amazingly adept at breaking out of his crib.

Plot
The baby is left alone with a teenage babysitter, Jeannie. Tom and Jerry sees this as the perfect opportunity to raid the kitchen. The sitter rushes to the phone and spends all her time there, however, and thus Tom and Jerry have to take the job of babysitting the baby, who seems amazingly adept at breaking out of his crib.