Sister caught me
My sister moved out last year to go to college and flunked out, so she had to move back home. When she lived at home she got the Jack and Jill bathroom between hers and my room, I had to use the guest bedroom across the hall. Well when she moved out, I got the Jack and Jill bathroom. When she moved back my parents told her she had to use the guest bathroom. She didn't much care for that and we ended up fighting about it. My parents told her tuff shit. So I'm in the bathroom last night stroking my johnson and evidently my sister had snuck in the bathroom earlier and unlocked her side door. Here I am whacking away when my sister walks in the bathroom. Now I'm not the type to give a shit about anything. I figure if I can spin something embarrassing on to someone else, it makes me to winner. So for real I'm like ready to fucking die because she walked in, but in classic fashion, I turn to her and say "you want a help me, my fucking arm is killing me." She just rolled her eyes and said "you are so fucking disgusting" as she storms out of the bathroom.
We had the outdoor bathroom door worn out at the lower part due excess water falling on the wooden panel. In a standing position any one could see the leg portion from a distance. One day only my younger sister who is two year young than me and myself of 20 years old were alone as others where out. In evening I got up from my sleep and was moving around and heard my young sister bathing with water running sound. As I casually looked at the crack of the door I could see that see was sitting on her heels. I could see her side butts round and water springling around her butts and heels. Just out of curiosity I just kneeled down and peered to see what is going on. To my utter surprise my young 18 year old sister fully nude was sitting close to the bath room wall under the running tap with the water directly falling on to her wide spread pussy which she had kept wide with her two fingers. The other hand was held on to the tap to balance her on her heels. She at times took her hand off the pussy to massage her boobs as the water flowed into her pussy. At a stage she started to tremble and I knew she is going to have a climax. She further thrusted her clitoris to the water flow and she fell back numb with the climax. At that moment my sister noticed my palm flat on the floor in her sitting position . She immediately stood and shouted to me saying I am your sister bathing, go away. Embarrassed I backed out, went to my room and started masturbating. And as I was about cum my sister was at the door muttered something and as I was raising my head I started cumming in loads straight at my sister who in utter surprise was horrified to such act and left the room. Thereafter I could every look direct into her eyes and still have fear whether she will spell it out to any one.
Nice try! You have to be smarter with your sister than that.