First Corin invited him in for late-nite snacks, which turned into late-nite raiding of the food supplies (cat biscuit box ripped open). Secondly, and far more disruptively, I was woken at 5:00am by a screeching near my left ear. Corin and friend had arrived home with a mouse. Evidently they had decided that dumping it on the floor of my bedroom and then chasing it around under my bed was going to be a great game.
I turned all the lights on. I refused to stand on a chair and shriek like a girl. Corin pinned the mouse against the wardrobe and it shrieked like a girl. And then escaped, making a bee-line (or a mousie-line) for a bundle of my clothes on the floor. Corin stalked the clothes. He pawed at them. I stalked the clothes. I moved closer and tentatively shook a sleeve here, a skirt there... Eventually Corin and I cornered him in the dress and I picked it up and hurriedly threw it out the window (well you come up with a better suggestion!). Two pissed-off puddies followed.
Then I just had to block out the sounds of tortured mouse and calm my beating heart and guilty conscience to get back to sleep. Yuch!