This happened a not too long after I was married. My mother-in-law has an olive complexion with a small breasts that have large, dark nipples. When I was dating my soon-to-be wife, I would come over on Saturday mornings to pick the wife up for a date. My mother-in-law would come out of her bedroom with a skimpy, sheer top and nice white panties. She would always make sure I could see everything. I would always get so hard seeing this that it was obvious the effect she had on me. This would happen just about every weekend.
After we were married this didn't stop. The mother-in-law came to visit one weekend to see her daughter. I worked mids and would come home early in the morning and the wife would already be gone to work. I came home from work one morning and the mother-in-law greeted me as she has before the sheer see through night gown with the large, dark nipples standing so erect. This morning it was too much; I instantly got a hard on. See must have seen it. She asked how my night was and offered to cook me breakfast. I was getting horny and thought that I needed to relieve myself before I could get to sleep anyway. So, I thought the breakfast would calm me down instead. I said, 'Sure let me put on some shorts and be back soon.'
I went to the bedroom to change. I got undressed and my dick was so hard hanging there, and I could see the precum starting to surface. I couldn't resist it any longer. I sat on the bed and lay back fantasizing about those nice tits and big nipples. I wanted to touch them from the time I first saw them when we were dating. I was jerking and squeezing my balls. I could feel the cum building in my balls and starting to rise into my dick. It felt so warm and I knew that any moment I was going to explode. All of a sudden the bedroom door opened and it was my mother-in-law. I quickly stopped and tried to recover over to cover my erect member. She was caught off guard as well. She stammered I did know if you wanted bacon or sausage? She said jokingly to ease the tension, 'I see you're already are working on the sausage,' and giggled. This did ease the tension. I admitted that I was relieving myself. She asked if this was my normal routine. I was red now and thought, what the hell, just say it.
'No, I saw your nipples and breast and wanted to touch them.'
Well, this caught her off guard again and she stood there a moment and a sheepish grin came over her.
'Why don't you just have a nice look and feel for yourself?'
I almost came instantly at her words. I said I would love to. She said there is one condition. I want to watch you finish what you were doing! I rolled over still hard and full. I began to slowly rub the shaft up and down. I watched her eyes follow my strokes. Her breathing became hard. She nervously raised her top and exposed those nice tits and large dark nipples. I took my finger and began to rub the precum on the head.
She walked over and sat next to me and placed her hand on my balls. I took my hand from my dick and started rubbing her breast feeling the erect nipples between my fingers. My dick was throbbing by this point. She took over where I left off. She placed her hand around the shaft and started stroking very slow. Her light touch was enough to send me over the edge. I shot three or four large ribbons of cum up into the air. They hit my belly and chest. I heard her moan and start cuming too. She cleaned me up and stood up. I will have breakfast soon come on when you're ready.