He was sort of looking for the way back home -- but also kind of not. Because Sirius was genuinely a bit afraid he wouldn't be able to fix what he knew was to come, and he wasn't sure in that case that he wanted to go back. It wasn't to anything good.
"A cheese fridge?" He asked, looking for the clearly offered distraction. "Bit strange." But then, he wasn't sure what a fridge was. He did like cheese though, so that seemed good enough for him. Well, that and the promise of an adventure. Just something plain and fun and enough to get his mind off of the mess that it was currently stuck on.
So he stood up and tilted his head to the side, giving her a serious sort of once over in order to size her up. "Sirius. I've got your back, too." Because he did. He was good and loyal like that. "Let's find adventure and also a cheese fridgey."