The tall pervert had put up with the smell and filth to conceal himself and was covered in a tarpaulin.
When he eventually emerged to the waiting authorities, he had no shirt or shoes – and was covered in human excrement.
The incident happened at the Hanuman Festival, a community yoga and music event in Colorado.
A security guard was asked to investigate when the woman said she noticed something moving inside the tank.
A few minutes later, the sex pest emerged covered in sewage but fled before he could be arrested.
The toilet invader is thought to be a vagrant known as Sky. He is aged about 20 and described as up to 2m (6ft 8in) tall and wore only trousers.
Police say he is wanted on suspicion of making ‘unlawful sexual contact’.
/Metro.co.uk/