Balki and Larry spend the weekend babysitting Gina's baby (the baby they delivered in "Hello Baby"). All goes well until they take the baby to the park, where an awful lot of carriages look alike...
Balki tricks Larry into agreeing to babysit for Gina's baby (the baby they helped deliver in "Hello, Baby"). They do fine until they take the bouncing baby boy to the park....and return with a girl...