You have been hanging out with your sister pretending to study, but in reality you secretly jerk off your cock watching her accidental upskirts. Today she realized what you have been doing and she is upset. Wow, she didn't know that her own brother is a pervert! What? You couldn't help it since she has been flashing you with her tight shaved pussy? What kind of excuse is that? She doesn't have to wear panties in her own room! Ok, since you show no remorse, here is what's going to happen: she will give you VERY detailed jerk off instructions while teasing you with upskirts and flashes of her pussy, ass and butthole! After that you will be doing all the house chores for a month! She won't lift a finger! What? Do you agree? Of course you would. Now start stroking that cock like a good boy ;)