I see there's a thread about things to do while holding and enema; so how about the flip-side of this - Things NOT To Do While Holding An Enema.
The one I remember most was never to answer the telephone. Early on in my enema career, when I was a teen and enjoying having the house all to myself with parents out for the evening, I answered the phone (it was a kitchen land line in those days) full to brim holding a large enema. To my surprise, it was my Aunt calling to see how I was. She went on and on. I felt like she somehow knew what I was up do; not to mention the mess I was making leaking the enema!