Day Three: Steal a life size nativity scene and display it in your room. When he/she asks, tell him/her "I had to let them stay here, there's no room at the inn."
Ludwig looked up, his face as impassive as ever, as you rushed in through the door, a large bundle of sorts under your winter jacket. He was used to your outbursts of energy, by now, but...
"[Name], is everything all right?" He asked tepidly, as he saw you peek out the window.
You let out a sigh of relief, as you turned around, and smiled at him. He couldn't help but return the gesture faintly.
"It'll be okay, now." You said, as you undid your coat, and took out the statue of the baby Jesus from underneath.
Ludwig cleared his throat. [Name]...what is that?"
"Why, it's Jesus, of course!"
"Yes, but...why do you have this?"
"Well..." you paused, wondering how you would explain the whole situation to him. "...there was no room at the inn!"
"No room at the..." Ludwig was more than confused.
You gently placed the baby down onto the sofa, and turned towards Ludwig.
"Well, you know how Jesus was born, right? Well, there's no place at the inn left, apparently, and I just couldn't let a new born child sit outside in this cold, can I? It's even about to snow, Ludwig!"
Ludwig's eyes widened, as he begun to realise what was happening. "And...where did you get this from" He asked, already scared for the answer.
"Oh, the baby? I don't know...he was just lying in someone's front lawn, as I was driving down."
"Did you just steal someone's nativity Jesus?" Ludwig couldn't help but raise his voice at the end.
"I didn't steal it!" You retorted. "Well, if I found a baby on my front lawn, I sure as hell would let them in! I should think that I'm doing the baby a favour!"
Ludwig sighed, as he shut his book, and took his glasses off. Pinching the bridge of his nose, to try and relieve the forthcoming headache, he tried to comprehend the whole situation of his girlfriend stealing a nativity Jesus as, according to her, "there was no room at the inn." There had to be a plausibly conspicuous way to return the statue, right? Before its legitimate owners charged [Name] with burglary, or even just made a ruckus around town...
"Wait, Ludwig, let me go get the baby's parents from the car, okay?" You cheerfully called, as you opened the door.
It would take a lot to relieve this headache.