Obese masked Russian mommy jumps on my skinny friend

That's how I, a student of 18, surprised my fat landlady when I lived with her for about 4 weeks. She was a 61-year-old widow, very nice and showed every day how happy she was with me.
When I sat next to her on the bed and touched her big breasts she said to me "So, you're finally there, I was expecting you sooner!"
She pulled me to her and since then I haven't slept in my own bed in the five years I've been with her. She was crazy about sex, that's what you call a nymphomaniac.