Behind the cabinet

When i was a teenager my parents decided to remodel  the basment to make it a den for us kids and as there were five of us it seemed like a great idea. I was exactly in the middle with both an older brother and sister and a younger brother and sister.

Next to the laundry my patents had a small bathroom set up sortof like a half bath with just a potty and shower stall. There must have been some sort of water line between them that got moved because there was a hole about 3″ big in the wall right next to where the potty sat.

One day i was alone down there and had to go so i went into the bathroom and sat down on the potty. I waited and waited knowing i had the urge to go however it was taking forever, i decidef to touch my self while waiting and was really getting horny when i heard a noise through the wall and realized there was at least one other person down here. 
Just then a hard cock was in the wall just inches from my face, i could see everything about it from the purplish head to the veins and even clear liquid coming from the tip. Out of curiosity I touched it and felt a wiggle as I did that, I got bolder after that and wrapped my hand around it sliding my hand up and down this increasingly sexy shaft. I had the sudden urge to lick the tip and taste the clear fluid that was now running freely out, so I extended my tounge slowly onto the head and into the slit of this cock in my hand. Wow that tasted so go and I wanted more so for the first time in my life I put my lips on a cock and kissed it to get the taste, then i opened my lips letting the head and shaft start to slide into my mouth. 
The cock and I started to work out a rythm were as I went foward it would go foward deeper into my mouth and as I went back so would the cock.