I was living with a girlfriend and her brother straight after school when I was 18. He used to stare at me around the pool in my bikinis and I had no doubts he pulled himself over my big tits and plump ass each night in bed. I used to hear a hand covered in vaseline wanking for all it was worth most nights if I happened to be awake. Coming home unexpectedly one night when I was supposed to be at the beach, I walked in on an hilarious scene-he was sitting at the coffee table with 2 of my g-strings (one see through pink gauze and one white lace), and pulling himself like there was no tomorrow. What could I say? Plenty!
'Enjoying tugging on that vaso covered cock wanker boy?'. He almost leapt out of his skin and tripped over his pants which were around his ankles. This made me burst out laughing. 'Its not what you think', he said. I said-barely able to control myself-'if its a pervert pulling himself over my g-strings covered in vaso, then its exactly what I think'. We finally agreed he should collect his vaso, his porn mags, and what ever else he wanked over and leave the house. He did-what choice did he have? But not before I told everyone in the building about his wanking habits.