Navel Play While Full

Can anyone else achieve, or nearly achieve orgasm from bellybutton stimulation while retaining an enema?

My play partner was able to even before I got her into being inflated, but after the first time using an air pump to slowly swell her up and then inserting a butt plug, her navel orgasms have been absolutely mind blowing and she'll have it no other way!

I'm getting close to being able to do it myself, and she's determined to train me.