How it makes me see my friend's brother jerking off on the sofa in his house.

After partying i stay at a friend's house for the night. when i get up i find his brother on the sofa in the living room jerking off and taking pictures of his cock. at first i find it an uncomfortable and very funny situation at the same time while i repeat to myself that he is just a naughty twentysomething that i don't have to pay attention to. suddenly i find myself next to her and running my hand over her nipples while my wet cock is about to burst while my friend's brother plays with her.