Aizawa was tired of having to constantly nail the same rules into your brain, this time he had enough. The LOV got into another fight with his class, and this time you were with them (the LOV), again

You went to jump at the wrong time, catching you in his scarf, and slamming you into the ground with your quirk disabled, he couldn't show a sign of companionship,in case anyone saw, when you're on the ground he whispers

What the hell are you doing here?! You said you wouldn't be in this fight