Strange Messages

I was getting ready for bed last night, around 1AM or so, when I heard what sounded like my front door being fiddled with. I was correct and after a few moments of listening to someone fumbling with the door handle and their keys, I opened it and gave the very drunk Uni student on the other side of it a hell of a fright as he hadn't expected to see anyone in what he thought was his flat.

I reassured him multiple times that I wasn't upset with him and sent him on his way to the flat he WAS looking for before locking up again and hearing a loud "F******CK that was so embarrassing...!" from the hallway. 

On my way out this afternoon I found this note plonked just outside my front door!