The naughtiest part being an illegal one: those that came to the artist in his REM-induced euphoria were not young attractive women. In-between classes, the 19-year-old sketched what came to him in dreams – the vivid, breathless ones that shock our consciousness when the sun rises – and soon assembled a small archive of 'naughty drawings'. In 1939, a young Finnish student by the name of Touko Laaksonen had a secret.