Enema Expert. Enema-ist? Definition

Define enema expert?

If you were to enlist a person as an enema expert, or I'm calling then and enema-ist, what qualification would they have to meet?

To qualify as an enema expert the candidate would have to pass a verbal test administered by @SwitchableSusie.

I don't know that you can really define that.

I do think the best credential is to simply experience it.