What does "bummer" mean?
"Bummer" here is an exclamation used to show that you are frustrated or disappointed, usually for another person. Here, it is said sarcastically because the baby does not actually feel sympathetic about his brother having to wear a sailor outfit. "Bummer" can also be a noun that refers to a thing or situation that is unpleasant. Ex: I heard it rained during your wedding. Bummer! ("Bummer" used as an exclamation) Ex: The party was a bummer, I didn't have fun. ("Bummer" used as a noun)