I have given a number to my wife, mostly for 'health' reasons. She was sort of taken aback by the last few, as she got aroused by them and didn't want to share that with me. She usually asks for privacy for expelling so I didn't wonder the last time I gave her one. After I left her, she said she still felt unwell and asked for a refill. In bed later, she admitted she had masturbated to several orgasms while she held onto the water in the bathroom and once she was empty, wanted to repeat the experience.
The old GF who helped me make the connection between enemas and pleasure had no qualms about the procedure being sexual in nature for her.