At Norma's place we'd finished unloading the many presents and we where enjoying a cup of tea when i announced to Norma that we had unfinished business and smiled. "Oh Ronald don't be silly,i'm old enough to be your mother" she admonished me,but i replied that she wasn't so big she couldn't have her bottom smacked.As you know i worship Norma's big backside and i have wanted to spank it since day one and the idea of punishing Norma for naughtiness with my hand or a slipper or a cane appealed to me,it was just a matter of getting my timing right and doing it in a way she'd accept.Norma eventually took off her trousers and went over my knees and i spanked the drum tight seat of her light green knickers gently at first building up to a steady rythm,slowly getting harder,until her big bum was wobbling about like a big jelly with each crack from my large open hand,Norma was squaking and yelping but in delight as much as pain,this was a thrilling new development for her.