At gym class today, my friend made this song:
🎵 I’m a Barbie girl, I am fantastic, my boobs are plastic!
Barbie Song Parody
Explanation
Explain Bear
Okay, so basically, the joke is that your friend is riffing on the old "Barbie Girl" song. The original song is about Barbie being a plastic doll. Like you are made of plastic, LOL! I bet you still play with dolls!