Police are appealing for information after a man described as having bad teeth and grey hair allegedly attempted to pay a woman to watch him masturbate.
The incident near an alleyway on Jubilee Grove in Sleaford happened at around 4pm on Wednesday, August 9.
A spokesperson for Lincolnshire Police said that reports of the man were that he was white and about 45-years-old.
He is described as 5ft 5ins in height, of medium build, with bad teeth and grey hair which is dark at the sides.
In her report to police, the victim said that he was English speaking an wearing dark coloured tracksuit bottoms.
Anyone with information should call police on 101.