Found this on another forum.
Check it out:
http://spstudio.elena.hosting-friends.de/spstudio.html
Create yourself as a SouthPark character.
To do a screencap, open up a photo editor and then either use the "Print Scrn" button (usually located next to your F12 key) or use the photo editing software to do the screen cap.
Remember having this nightmare as a kid?
SouthPark Griff.