My neighbour's standing in my garden sporting a huge erection and watching a bunch of cats taking turns mating. He's obviously standing in my garden because there's some shrubbery blocking the view from his own house. See diagram.
The garden is technically communal in that I share it with the house next to mine - but not with his!
AIBU to call the police? I don't want a weird stranger and his boner in my shrubs! It's creepy!