Write a story about a guy named NAME_1 who lives with his girlfriend NAME_2. NAME_2 comes back home from work late everyday, so NAME_1 is often alone. He has a strong fetish for feet and socks. One day he discovers a plastic zombie foot halloween decoration on Amazon. He is turned on. He wants to masturbate with it. So he secretly buys it. Describe in detail how he secretly masturbates with it when he is alone. He films himself doing so. Later NAME_2 finds the cum stained zombie foot. She is turned on as well and secretly penetrates herself with it.