Unbeknownst to me, my brother's friend decides to pay an unexpected visit while I'm home alone. I'm caught off guard, mid-masturbation in my room, my hard cock exposed and my ass lubed up. He can't help but stare, his own dick tents in his pants. I'm embarrassed but intrigued, allowing him to approach. He drops to his knees, taking my cock into his warm, wet mouth, sucking me off while I watch, turned on by the taboo.