Around 3:30 a.m., under mild insomnia & general ache from an extended hangover, I started hearing an insistent yet quiet sssssszzzzzhhting sound. I investigated and found the ssssszzzzzhhting was coming out of the window; a kid was tagging the wall of my building! I almost wanted to say something, so I could join, but I figure it would be taken the wrong way, and I could end up scaring him away, or probably getting myself shot. However, his tag was "MOOSE!," so in hindsight, I think he wouldn't have minded.