PRANKSTERS drew a willy on the roof of a top school that was so large it could be spotted from SPACE. But it went unnoticed until it was seen on Google Earth. A group of ex-pupils was last night blamed for the rude shape — snapped by satellite. One former pupil of £2,906-a-term independent Yarm School at Stockton on Tees, Teesside, said: “A couple of ex-students hopped over the school fence on a weekend and went unnoticed by guards. They managed to get on the roof of the Friary building and somehow mark on the willy. They also burnt a manhood into the grass.” Although the shape on the roof has been scrubbed off it can still be seen on Google. Google said: “If users spot something offensive we would consider having it removed.”