Caught Cockhanded

I was masturbating in my room and for some reason the door was not locked properly. The lock has some issue that one needs to push twice on the door to lock it. My cock was out of my pant zipper and standing in glory. It was rock hard when suddenly the door opened and my 13 year old niece entered the room. Her eyes got bigger and she was staring right at my cock. I tried to put it back inside and pull up the zipper. But I did the opposite. I pulled the zipper before I put it back and the inevitable happened. My rock hard cock was stuck outside while I was in pain and my niece watching the show. Her mouth opened in awe and then she started to laugh. luckily the lotion was nearby an I poured on my cock and released it. The shame!!! I could not come out of my room for the whole duration of 2 days as long as she was in the house.