Growing up I developed a kink around my step grandmother. My maternal grandpa died when I was little and the woman he had married before I was born subsequently became ”grandma”. Once visiting us when I was 13 she accidently saw me naked through an open door, something I could never forget.
Over the years i fantazised about being nude in front of her again. When I moved to her town in my twenties for an education I put a plan into practise. I made a false form from ”the school nurse” requiring notes for ”height (barefoot)” and ”weight (naked)” which I randomly dropped at her coffee table after dinner, when visiting her. All had to be attested by a ”guardian”.
She picked up the form, put glasses on and read it with some satisfaction. Grandma took it seriously, as soon as we had finished our coffee, she suggested we’d go to her bedroom where her scales were. She ordered my socks off and me standing straight to the wall she noted my length with a measuring tape.
Then I, a little hestitantly, started to undress. Finally I stood in my briefs, but grandma sternly remarked: ”Naked, it says!”. So I pulled off my briefs, walked fully nude to her scales. She definitely looked me all over, but acted very ”professional” too. She noted my weight and signed the form while I was getting dressed. Only time being weighed fully naked in front of somebody. It lasted less than 10 seconds, but it’s a lifetime memory.