The 20-year-old woman was listening to a band named the Thundamentals at a Melbourne festival when a man behind her ejaculated onto her, then disappeared.
Emma, as she is known, immediately took her top off and asked a stranger to hold her things while she changed her clothes.
![[Stock Image Used] The man performed the sex act in a dense crowd](https://images.bauerhosting.com/legacy/lifestyle-legacy/bf/a615e/61adf/8d1a8/f61be/5798f/4367e/AKT77G_646x363.jpg?auto=format&w=1440&q=80)
‘He must be sick in the head to do something like that’ said the disgusted 20-year-old, who later handed her shirt in to be analysed by forensic expert.
The man is described as being Indian in appearance and between 18-30, with acne scars on his cheeks. He is of average build with brown eyes and short black hair.
Emma says she was alerted to what had happened when she felt something warm hit her back and then turned around to see him doing up his fly.
Police have created a digital image of the man and are hoping they will be able to trace him.