We live in a cul de sac and once you get out of ours, there is another, much larger one....well this other one is excellent at Halloween because almost ALL of the houses participate, decorate and go all out. Trick or treating is welcome and there are kids everywhere...other kids come from surrounding streets due to the air of festivity etc. These houses are our neighbors and as our Dc are young, we go early and then go home and they call on us in return with their mostly older kids.
There's about 30 houses I suppose...it's a big U shaped street.
We were in a group of about 6 and one child only aged 3 in our group got a bit freaked out halfway round, so I left my DC with DH and the other kids and adults and went home with the little lad and his Mum.
As we were leaving this U shaped cul de sac, we noticed one house lit up like christmas...all the curtains open and a man, in nowt but a TINY towel, repeatedly bending over touching his toes. 
You could see his arse crack and it was a bit odd. When DH and the others came back he said that they'd seen him...and he was standing in the window doing pelvic thrusts in this towel!
He knew what night it was...he must have done it for attention! We just looked the other way but what was his motive?