I remember at 10 always seeing my foster mom washing at sink.This got me aroused.She was late 40s,smallish with a full figure and wore a short slip.Eventually i got in the habit of coming in behind her at sink telling her i loved her and wrapping myself round her.She never wore nickers so this really aroused me so i would slip off my pants and rub myself up and down her hips.She only said oh son thats nice and then seconds later i would ejaculate all over her bottom.Nothing more was said ever and i would then walk out.This happened regularly until i stopped a few years later.Really enjoyed feeling myself naked against her bottom and squirting over those hips,i suppose it saved me from staining the bed ?