Video Description: Your parents are out of the house and your sister is bored, and wants to play Uno with you! You say no at first, preferring to keep playing on your computer, but your sis keeps nagging and teasing you to make you give in, even suggesting that to make it more interesting it can be Strip Uno! You tell her it's weird to play a stripping game with your sibling, but she makes fun of you for being chicken, so you have to give in and try to prove her wrong! The two of you play a few rounds, giggling as you both gradually peel off layers of clothing, until finally it's just you in your boxers and your sister in her thong - until you win once more, making her have to get completely naked! You're laughing at your sister's embarrassment until she points out the tent in your boxers, and then it's your turn to be embarrassed as you both come to the realization that you've gotten a boner over your own sister! Your sis laughs and teases you, but at the same time seems fascinated by how big it seems, eventually just demanding that you take your boxers off so she can see if it's really that massive! Since she's already naked you decide it's fair, and you pull off your boxers so the two of you are naked together. You feel pretty proud as your sister stares in shock at your massive cock, as you can tell she's struggling not to let on how much she likes it! Feeling confident, you ask her if she wants to see you stroke it - telling her that the girls you hook up with always like watching you jacking the impressive length. Your sister is shocked and says no at first, but soon changes her mind and tells you to go ahead and jack it just so she can have a quick look! She's fascinated as she watches you stroke, admitting that it does look really good... And when you tell her she can go ahead and touch herself too if she wants, she barely even protests before playing with her pussy in front of you... Somehow the two of you have gone from just playing a simple card game to masturbating in front of each other, and as the two of you get closer and closer to cumming you both giggle over how crazy and dirty this is - but the moment you both orgasm, reality kicks back in and you start panicking, realizing how crazy and wrong that all was, and promising each other that you'll just pretend this never happened!