Police are searching for a flasher who exposed himself in Nettleham Road, in Lincoln.
The incident happened just after 8am on Tuesday, November 13.
The flasher is described as a white male, aged between 20 and 30-years-old, between 5ft 6ins and 5ft 8ins with "light mousey" or ginger hair.
He was wearing small round glasses, with a grey tracksuit top with green logo and matching grey bottoms, and was unshaven.
It is currently unknown if the flasher is linked to any previous incidents.
Anyone with any information on the man's identity is asked to call Lincolnshire Police by calling 101 and quoting incident number 21 of November 13.