So, I've known for some time now that my co-worker Reid is very afraid of clowns.
Reid is out of town for a week...
...I like to mess with Reid.

This is the original artwork that I used for the prank.
The great thing is that, Reid is familiar with this
illustration that I did a couple years ago.
He was already fearful of it while I was painting it!
So, out of love mind you, I spent an hour of my day,
printing, tiling and hanging Reid's new cubicle wallpaper.

Now the prank has progressed into, the whole art department
contributing personal touches, in an effort to transform Reid's
cube into a scary clown town.

I ended my part in the prank with a special voice mail from
the spectre-clown, complete with
calliope music, telling
Reid not to worry, that the clown would always be watching
him work...over his shoulder.
***UPDATE***I came in early today, and was able to capture this photo of Reid in the cold grip of sheer terror.
"I love it when a plan comes together." - Col. John "Hannibal" Smith