I don't think that's it, it's more that it makes them look kinda trashy.
And by that I hope you mean something along these lines instead of actual bruised chicks:
And to get back on topic, I bet
the Rabbits will lose the next game (in a cute way) by no more than 10 points... Since they now actually have one embarrassing but very educational experience behind them, and knowledge that Yui is an expert with soft, round, bouncy objects (well duh).
Where's that kickbase league of hopeless, cute celebrities I wished for? Worked fine enough with Gatas.