This is possibly the only time one of the babies talks to, and is understood by, an adult, in this case Tommy speaks to Alisa. However, since it's within a dream, it makes sense that she can understand the babies.
After Susie frees Tommy from the petting zoo in her dream, Tommy states that he's been locked in for a long time, "maybe even ten minutes". While it's common for the babies to not understand the concept of time, it serves as an inside joke. Opening title aside, the episode has been running approximately ten minutes at that point.