I was 40 when my first wife and I got divorced. I had no desire to live in the same city as my ex, so when my younger sister called and asked if I'd like to come out and stay at her place I decided to take her up on it. She was recently separated herself and with six kids ranging in age from 15-2, wanted her open basement converted into bedrooms. I decided I would take on that project while staying there.
My sister was planning a visit out to see our mother who lived in another state and wanted me out there while she was gone for a few weeks. Dawn, her second oldest at 13 did not want to go with the rest of the family and my sister couldn't leave her at the house alone so she asked if I'd mind if Dawn could stay at the house with me. I agreed and drove out there.
My sister was having a few issues with Dawn and her fifteen year old sister Heather. Both were in a bit of a rebellious stage and Heather had taken up with a 21 year old high school drop out named Mario. She thought Mario acted like a thug and was a bad influence on Heather. Besides, a twenty one year old guy hanging out with a fifteen year old girl was completely inappropriate. My sister knew me as very much an alpha male and asked me to run him off if he ever came around. I told her I was only too happy to oblige. I was in the best shape of my life and would have no trouble getting rid of this guy by any means I had to.
A few days after I arrived and my sister had taken most of her family on the trip, I was down in the basement working when I heard someone coming down the stairs. It was Dawn and this guy Mario who had come over looking for Heather. I asked Dawn to go back upstairs because I had something I wanted to say to Mario in private. Standing face to face with him he was a little shorter than I was but with a stocky build. But I was more cut, experienced and full of confidence. I told Mario that he was no longer welcome around this house and that Heather was off limits. I told him I was living here now and would be around to make sure these new rules were followed.
Mario glared at me. It was clear he really wasn't intimidated, and responded by shoving me hard and telling me to go fuck myself. I shoved him back and it was on.