Quoting -BLT-:" I think it's when they go by themselves. It bothers me when people think their kid's potty trained, but ... [snip!] ... no accidents. IMO, even if they need help pulling pants up or wiping, they would still be considered potty trained."
We had friends that brought the potty everywhere, like birthday parties, dinner, etc and would just make her sit on it the entire time. They kept saying she was FULLY potty trained, but I think she really had no other option.
I do consider my daughter fully potty trained but I still go in and wipe her butt. I guess I don't have too, but really she is kind of nasty, lol