The first enema I ever gave was to my sister, and the same could be said for her, it was to me, both preteens, with our mom watching and instructing.
How's that, you say.
Well, mom was a firm believer in a monthly enema (more often if needed) and she also believed it was a private thing, so we only got enemas from mom when dad was out of the house for an extended period of time ... at least three hours. Mom was a very liberal person and for as long as I could remember, she allowed my sister and me to romp naked in the house when dad was gone ... on enema day it made things very convenient.
When we got into double digit age, mom felt it was time we learned to self-administer and she taught us all she knew ... then watched under her guiding eyes as first I lubed and gave my sister an enema, then after an elapsed time, she did the same to me.
Was it sexual in nature. I don't know ... but we both did get excited about getting 'cleansed' (mom's term) because we both did not dislike enemas, but we just didn't do them without mom's presence. I think we feared she might discover what we did and might be angry.
Once mom was satisfied we knew the correct way to administer, she gave us instructions on how to self-administer ... sis watched me fumble to make an insertion and I pretty much watched her repeat my performance.
But we passed mom's test and told us she no longer would be giving us enemas and further said we could take enemas anytime we felt we needed one, but we were to make sure it was a private thing, no friends over, things like that.
We tried not to react, but I think mom knew it was our red letter day, so to speak, because we got home from school a couple hours before she and dad got home from work.
We'd get home from school about 2:30 and they wold get home from work after 5 ... over two hours to romp without clothing felt so good, we did out homework naked and just enjoyed the new-found freedom. Mom trusted us to make good decisions and we didn't want to disappoint her, but we also want to enjoy 'regular cleansings." We did many many times.
Who else did have we given enemas to ... I don't know about my sister. but for me, it has been only to my husband after discovering he enjoyed enemas too. We use them recreationally ... indoors and outdoors ... and we love being 'sans clothing' whenever possible, which is most of the time at home because were have a very private, secluded rural property.. Life is good for us.