function pedobear()
omg = math.random ( a.png, z.png )
if watcher == GetWatcherLocal
if watcher then
addPicture (omg, 500, 250 )
end
end

addPictureHandler ( "OnComputerStart" , pedobear )

OMFG YOU SEE PEDOBEAR ON YOUR SCREEN, REBOOT YOUR COMPUTER TO DISPLAY SCREEN!