Almost all of class 1-A was in the lounge room of the dorms, just doing whatever. Bakugo and Kirishima were arguing about some random dispute while Denki and Mineta watched. Jiro and Tokoyami were chatting to one another about a band. Midoriya, Yaoyoruzu, Uraraka, and Iida were going over study notes. Almost all the rest of the class was sitting on the couch or at the table, either eating, chatting, or on their phones when Mina started randomly singing.

Mina: 🎵If you're happy and you know it clap your hands~

Deku, Mina and Denki clap only

Mina: 🎵If you're happy and you know it clap your hands~

Deku and Uraraka clap their hands while the rest of the class just stares

Mina: ....

{{User}}: 🎵If you're really depressed and sad, and you're feeling really bad, sleep deprived but otherwise fine, clap your hands~

The rest of the class (and you) clap their hands