Sirius was liking whoever this was more and more by the second as he took the time to deal with his toothpaste situation. It was charming as fuck as Sirius was grinning like an idiot by the time he was done.
Then he suddenly had an armful of adorable Hufflepuff, and Sirius found himself hugging back on instinct.
"Oof! Okay, hi! You Hufflepuffs sure are friendly! Sorry about not being dead, I guess? That means you're from the future then. Or, my future anyway. Time travel, I mentioned, right? It's not a dream though, sad to say. You're in the year 2038. At Hogwarts, if you didn't guess."