Feed the dog.
When I was 16 my cock ruled my life. I lived at home with several siblings and shared a room with my brother. Masturbation privacy was hard to come by until my friend went on vacation with his family. His grandmother was in the hospital and had left a dog home alone. His parents asked me to feed the dog and gave me a key to the house. A house with nobody home or coming home.
They were going to be gone for a week and my friend was gone so I had nothing to do but jackoff. It was the first time I had the freedom to masturbate in complete privacy and with no time limit. During that time I jerked off several times a day and fulfilled many fantasies for the first time. I would spend the whole day naked and walking around the house. My dick got hard just at the fact that I could dance around and swing my dick in the air. I jerked in front of a mirror for the first time and tried several different lotions and creams for lubrication. It wasn't until after I left the service and rented my own apartment that I had so much solosex freedom.
The week went by quickly and I was getting in my last jackoff in the living room when disaster struck. I was stroking my cock in complete bliss when I heard someone coming up the stairs. I quickly grabbed my clothes and dashed in the nearest bedroom. I got the door closed just as my friends dad walked into the house. I was positive he could hear my heart pounding as I stood naked behind that door. I listened carefully as he talked to the dog and fed him. I was scared to death and trying to calm down when my limp prick started to rise. My mind became aroused by my situation and I got turned on by being so close to discovery. As I listened to his dad move around the kitchen I was now standing naked, with a full erect penis, just behind a flimsy door. He finished getting the dog some fresh water and walked out of the house. I breathed for the first time in about 10 minutes. With my stiff cock leading the way I walked through the living room and confirmed that he had left. My heart was still racing and my cock was still rock hard. I was so turned on that I lubed up my dick and started jacking like a madman. My week of masturbation heaven might be over, but at least the last cum was undoubtedly the best. I even got paid for feeding the dog.