Mom's Birthday Spanking

When I was 16 years old, my Mom was going to turn 40 on her next birthday. I joked with her that on her birthday, I was going to give her 40 swats on her butt. She always just laughed, and say " We'll see about that". My Mom and I lived alone. Mom had divorced Dad five years ago. I was an only child. Mom was a very attractive full figured brunette. She was a very independent, hard working woman. She owned a very popular hair salon. The morning of her birthday, I set out flowers and a card for her on the kitchen table. I came down right after she read her card. She was crying. She hugged me, and told me how much she appreciated me. I held her tight. It was the longest hug I ever remembered with her. She finally pulled away and said with a smile, " Maybe I might have to let you give your old Mom her birthday spanking tonight ". I laughed and said " Your getting them whether you like it or not". We both laughed. Later that night. Mom had a couple glasses of wine. I had one more g*ft for her, but I didn't know if I'd have enough nerve to give it to her. I finally came into her bedroom holding the present I had wrapped. She was so excited to open it. She pulled from the box a black mini skirt. She was a little surprised, but continued smiling. She said " Well, I didn't expect this". I was so nervous. " I hope you like it Mom". She continued to pull out the next item in the box. A white button up blouses. " This is very nice honey, I really like it". The last items were what I was really nervous about. She slowly pulled the items from the box. Her smile slowly faded. " I don't know what to say", as she held up a black garter belt with matching black lace panties. The last item was black nylon stockings. She looked up at me. " You bought this yourself "? I told her I bought everything at the mall. I told her that I was really nervous, but a lady at the store thought I was much older. So she helped me pick out clothes for my " girlfriend ". My Mom set everything on her bed. She stood there, playing with her hair. " Honey, these things are very nice, but that skirt is super short. I Don't think I could wear that without my big butt hanging out". I just ran my hand over the panties that were lying on her bed. " Mom, you'd look great in this outfit. I thought this could be your birthday spanking outfit ". She looked at me with a shocked expression. " So, you want your Mom to wear this just for you? I turned to her looking her in the eyes. I reached up and ran her fingers threw my fingers. " Mom, I want to spank you when you wear this outfit ". More to follow.