For the most part, it was taken in private in the bedroom or my mother and father's master bedroom. The post did bring back a very clear memory of a time when I was around 7 and my sister was 5. We were both sick and running a fever. My mother called us into her bedroom and announced that she wanted to take our temperatures. We were told to lay down on the bed and wait for her.
Mom came in carrying a tray. On it was a jar of petroleum jelly , tissues, bottle of alcohol and a white thermometer case. We sat up in the bed as mom opened the thermometer case and pulled out the thermometer and held it up to the light. She shook it down briskly , making a "whip-like " sound. She then opened the jar of petroleum jelly and dipped the thermometer into it and turned back to us.
"I am going to put the thermometer in your rear ends. It won't hurt, but you have to be still while it is in or it could "BREAK" she said with great seriousness. "Alright Tommy, turn over on your stomach." Mom said and , of course , I did. My sister sat and watched the procedure closely .
Mom dug her fingers into the waistband of my pajamas and underpants and pulled them down to below my knees.
I felt cool air on my now exposed bottom. With my head on the pillow and turned to the side, I felt my mother part my buttocks , exposing my anus. It tingled. Moments later, the lubricated bulb of the family rectal thermometer touched my anal opening and slowly slid up my rectum. Mom released my buttocks after inserting an inch or so up my feverish rear and she sat beside me and checked her watch.
I lay there enjoying the tingling sensations, as mom adjusted the rectal thermometer as my sister watched carefully. Mom finally withdrew and wiped the thermometer with an alcohol moistened tissue and noted my fever.
She then shook it down again and re-lubricated it and turned to my sister.
"Alright honey, it's your turn, now lay on your stomach for me." she said and I watched my sister assume the position I was just in.
Mom then pulled her panties down to below her knees and , as with me, she used the fingers of her left hand to spread my sister's buttocks.
Her tiny , pink anus came into view for a moment before my mother carefully eased the rectal thermometer into in before releasing her buttocks and sitting next to her on the bed for three minutes. My sister was a wiggler and my mother admonished her to "be still". I watched as she parted her buttocks and pushed the thermometer deeper into her rectum as her moving caused it to slide up.After noting three passes of the sweep hand , the rectal thermometer was removed, wiped clean and read.
When my mother left, we talked about the procedure and admitted that we liked the way it felt.