Long anal toys - How deep is too deep?

I use a 29 inch colon tube from amazon to flush my colon out I can feel it going all the way …

"AMATURESSS"!! I would feel embarrassed to make public such diddly squat insertions.

Worship the black hole that is my glorious arse hole that knows no limit to either depth or girth!

I have a flexible dildo about 20 inches long. Or so. It is very narrow. I never know how you are supposed to measure the girth of a toy. Anyway, it is narrow enough that I can insert it, well lubed with coconut oil and take the whole length eventually. What a rush. I have no idea where it all goes but the feeling is just exquisite. I'm not as dexterous as I'd like so fucking myself with it is tricky but a I do manage a bit of thrusting before it all gets too much for me and I have to play with my cock and come over my skirt. It is also too soft for wife to use in a harness as a strap on I think. She would need three hands to hold it just so she could thrust. MYbe a helper is needed?