While actually getting to watch an enema, suppository, or RT being given was fairly rare, observing and listening to the preliminary announcement and preparations was quite a treat, especially for a very inquisitive lad. I learned a lot this way!
Some of my significant memories included one referenced earlier in this thread (#50). Another momentous occasion occurred when the family had gathered at grandma's for Sunday dinner. My cousins were there and my aunt asked grandma to help her give my female cousin an enema after dinner. "The doctor wants me to give Debbie an enema and I could use some help".
Because grandma's place was a small 2 bdrm with a single bath, the events were well known to all of us. My male cousin and I teased Debbie before and afterward. We watched as the enema bag was filled from a pitcher at the kitchen sink. It was carried into the bedroom and my cousin positioned on her back. Mom, grandma, and my aunt were gathered as my cousin's panties removed. We boys were shooed away and the door closed.
We listened intently as the events unfolded. My cousin pleaded with the women to stop. They encouraged her to pant and they praised her for being such a big girl for her enema. Soon, the door opened and my cousin fled to the toilet with her mom close behind carrying the empty enema bag.
When all was done, my aunt scolded my cousin for teasing and told him he was getting an enema when they got home. I got one as well before bed.