By the way, I have recently changed to vodka (diluted approx 3 to 1) instead of wine. The acidity in the wine was giving me some "issues" Wine is fine once a week or every two weeks but the more frequent the use the more irritating it seems to become.
My girlfriend and I enjoy mutual simultaneous wine enema's, mostly with white wine (less mess) and occasionally Champagne.
It's pretty easy, clean out each other twice, set-up your bag with 1/2 bottle warm wine and flow slowly by setting a clamp. Being completely clean the wine goes to work within a few minutes. That small amount coupled with 2-cleanings doesn't make you uncomfortable. Wait about 10min for the full effect, then add more wine for the degree of intoxication you desire. Sex while your connected and re-filling is extremely tactile, exciting and you guys will be amazed at how long you last.