hey he is not a loser! they were late because they bet each other that Wan couldn't leapfrog over her shoulders while she was standing up and that Korra couldn't bench press him (and they both lost). and then OH CRAP DON'T WE HAVE A CLASS?? If anything they are equally losers.

(also this means they will arrive in class at the same time kinda sweaty and embarrassed lol)

Also while under normal circumstances Wan does not just sit by and take people yelling at him he kind of needs to pass this class so instead he will just sit there and give him indignant looks.