Sir was away but he made sure i kept up with my training. of course riding his hard cock is the best form of exercise and he made sure i held my pose long enough to make my muscles strain and teach me the correct posture and position [ruthrainer]
Your little sister may have an ego as big as her cock, but you're always sure to remind her how easily you can pin her down and assfuck her... Of course, it wouldn't be any fun if you didn't let her get you back every now and then.