Baby Whisperer is an episode of the ALVINNN!!! and The Chipmunks series.
Alvin dresses Theodore up like a baby in order to impress the girl of his dreams.
Alvin's at the skate park when he wipes out due to seeing a pretty girl talking to Kevin. He finds out the girl is Kevin's cousin and they have to babysit her two two-year-old brothers. Kevin tells him that they come to the park everyday so Alvin takes Theodore, a supposed alley baby named Ratso, to the park in order to get to know Mary-Anne. While they talk about babies, her brothers terrorize Ratso, either fighting over who he belongs to or chasing him around the park. Ratso is able to get away by tying them to a tree. Back home, Theodore agrees to be his "wing baby" for a few days longer given Alvin's belief that he's found (another) soulmate. Alvin continues his romantic gestures as Ratso is once more frightened or used as a toy by the real babies. Theodore quits again believing Mary-Anne might not actually like Alvin more than a babysitting partner. Taking Theo's advice, Alvin calls to ask her to the movies only to be asked to babysit her brothers while she goes with someone else instead. The boys break furniture in the house and Alvin's more concerned with who Mary-Anne's going to the movies with so he abandons his babysitting responsibility to find out. He's caught in the line and explains Theodore's watching her brothers. Following a tiring exchange between the roles of Theodore and Ratso, Mary-Anne leaves angrily over Alvin's actions.
- "I'm Coming Home" 
- When this episode premiered in the US, it aired with a rerun of The Sub.