That's so familiar . It's a weird kind of tingle !! The one other time / situation I felt that was in the ICU . The drain tube coming from my side was being removed . As they pulled out the Drainage Tube the Incision kept getting bigger and bigger !!! To my amazement out pops a huge Safety Pin attached to TWO Surgical Gloves tied together !!! I could not believe how the incision stretched open and just snapped shut again !! It was just a Hole in my side , not a long incision . As the flesh stretched to allow the gloves to come through the Tiny hole I felt that same thing . I figure the flesh that the Stoma attaches to is strteched by a gas bubble or lumpy bits in the output and that's where that sensation comes from . It does go away , I guess when your body gets used to the abnormal anatomical configuration the nerve endings stay calm .
Those gloves had me mesmerized , but didn't feel any pain at all ...then again I probably have Demerol to thank for that !! LOL ☘
Just my experience ☘