this is so funny and the ending so nice.
Technically, the boy is embarrassed to go dressed in SM(because his intimate parts are too marked ..) while the girl enjoys going as WW. Throughout the video funny things happen and they usually flirt with each other (especially the girl) at the end of the video the boy tells her that he loves her and then kisses her.
a funny thing was when the boy says he doesn't want to go because he is embarrassed then the girl tells him to change his face (attitude) or if not she does call BM, then the boy says: no, no Batman and he decides to go with her.