Mother In-Law our First encounter.

So for a short time my then Girlfriend and I stayed at her parents house.
It wasn't too bad the Dads a cool guy and her Mum is quite funny when she drops her guard.
Anyhow one morning I'm not going into work so I'm having a lay in. The Mrs had already gone and her Dad was always working away so I wake up to Hoovering outside my door and her mum hollering something through the door.
I just shout "yeah" back thinking it was a nothing question and her mum walks straight in.
I'm there naked with morning glory and half dazed. I grew up in quite an open houshold so I didn't react other than ask "what she said".

She giggled and said she asked if she could hoover as she didn't want to carry the hoover back up 3 sets of stairs later.
I covered up and said I'd do it in a minute.
She didn't as is the norm take one word and she just progressed with Hoovering.
Now she was not my type at all. Quite a large lady and not in her prime but she had a filthy mind and often I caught her flirtatious talk with who ever. She was bashful but not shy at seeking a laugh.
So I reach under the duvet to adjust myself and at that moment she told me to at least wait for her to leave she isn't a housemaid she's my mother in law.
I laughed and quipped it's my room so I'm just being comfortable.

Then the hoover went off. She turned around and walked to the bed. Looked me in the eye and said its her house so any funny business and she may have to put me in my place. Then she grabbed through the duvet my hard cock and started tugging on it.
I didn't stop her. Instead I removed my hand and layer back. She lifted the duvet and pushed it away before grabbing my now very hard cock and instantly stuck it's full length straight down her throat and fucked my cock with her face so hard I was coming in minutes.
I just spurt several loads straight into her mouth. She swolled some and sat up with my cum dribbling off her lips as she licks them and starts to clean her face up.
She smiled at me, stood up saying I should finish the Hoovering and walked straight out the room.

I must admit that was damn hot and I think living here may have a few unknown benefits.
No way was I telling the Girlfriend but things did progress over the coming years with quite a lot of secretive sex and not all of it I was involved in. It turns out her whole frigging family as sex crazy with nothing spoke about but everything on the table.