Theo gave Draco a look that might have been insulting if it hadn't gone so fast, something that almost asked 'how can you not know what it is already?' - but Theo didn't care about such things and he answered as he made himself comfortable on Draco's bed, laying across it on his stomach like a lazy cat, like he'd been invited to do so, but positioned so that he'd be able to jump off and get at his wand if he needed to. "Ashwinder egg."