Friends: Season 2, Episode 6

2 - 6: The One With the Baby on the Bus

When Ross has an allergic reaction and Monica has to accompany him to the hospital, Joey and Chandler babysit baby Ben. Whilst using him to pick up women, the boys accidentally leave the baby on a bus, and must find him before Ross finds out. Meanwhile, Phoebe loses her Central Perk singing gig to a professional and becomes a street singer instead.