I'm here to help. You'll need some make up and a good rope. First, write a suicide note. I suggest a photo of you pointing at yourself in a Fonzi manner. The note will read, "Who has two thumbs and is hanging in the next room? This guy!"
In the next room, you have yourself hanging from the aforementioned rope. Of course, you'll need to tie it in such a way as it looks like you're hanging, but really you're in a harness. When your buddy finds the note, and then you hanging there, tongue out, face made up to look bloodless, it'll be quite a hoot when after the proper pause you yell, "TOP THAT BI#(H!!!"
You can thank me later.