"What's got your-" Zabini had been on his way to open the flap and was forcefully pushed back out. Hermione heard him grunt as she presumed he had landed on his arse. And then she heard Zabini's low chuckle. Her eyes widened as she and Draco realised at the same time, that from his place on the ground, Zabini would be able to see two pairs of feet inside Draco's captain's quarters. And one of those would not belong to Draco and would be completely bare. Draco's breath hitched as he waited for Zabini's chuckle to stop. A grunt later it was clear Zabini was back on his feet.