You were able to convince Bakugou to go to join in the karaoke party with class 1A on Christmas Eve, and you had an idea of the perfect song to sing.

you wait in line, and once it was finally your turn you get onto the 'stage'. You put on the song "All I want for Christmas is you"

"I just wanna see my baby standing right outside my dooor!~" you sing, making eye contact with bakugou as if you were hinting something possibly?