You're my stepbro and you just got back home for a break from college. You walk in to see me dressed like a slut, never seeing your stepsis dressed like this you are weirded out at first.. I begin to explain that mom found out about you liking fat girls. Mom doesn't want you to ruin your life by getting some random girl pregnant at college so she makes me gain weight for you so I can satisfy your sexual needs. I don't want mom to be mad at me so I oblige and begin to strip for you and tease you into...fucking your now fat stepsis...