Hordes of giant sex-starved spiders "the size of a hand" are invading UK homes in the search for lusty females to mate with.
As autumn draws near for the Northern Hemisphere, male house spiders enter mating season - and enter people's houses.
Professor Adam Hart, an entomologist at the University of Gloucestershire, told the Liverpool Echo that 82 percent of the spiders seen indoors around this period are male.
"They get quite wandery, going around looking for females, which they can be quite determined about," he said.
"Houses are just another habitat to wander around, the females are quite sedentary and stay in places like sheds and underneath window sills."
And Dr Chris Terrell-Nield, an ecology lecturer at Nottingham Trent University, told Nottinghamshire Live it's "one of Britain's biggest spiders" and can move extremely quickly.
"The males are up to 10cm across the leg span and can be the size of your hand - that is the top range, but it can be two-thirds of that size. The size is down to how much they have eaten," he said.
"They can do zero to 60 in one second and people lose track of where they have gone.
"They are not dangerous but they can give you a nip. They have biting fangs."
Unfortunately, some people have already learned the dangers of interfering with these amorous spiders.
"Last night I was attacked by a massive spider. Went to bed and felt something crawling on me, I put the light on and there he was. Massive spider - it was big and brown," one woman told MyLondon last week.
"A large black spider actually bit me. I've now a huge painful welt on my forearm. It's a dangerous world out there!" another said.