I like anal inflation and have so far got up to an 13 inch circumference and around 7-8 inches long (rugby ball shape) for a homemade internal dildo. I can push that size out easily nowadays but not take that size in without help!
The next day my anus is very loose and wiping is an issue when your hands slips too deep and you need more moist tissues than normal for clean up! It settles back a few days later and my anus re-tightens.
But the trained anus has memory and easily re-opens each time, gradually taking deeper and wider with practice...
