That's the joke. Millie calls to Darnell "Hey Shrubhead, is that your turtle? Darnell responds "No one owns Mr. Turtle, but he is my friend". Then she tells him there's no reptiles allowed in the trailer park.
That line you deleted from Season 2 should go in the notes section, about him originally not having a name. Because darnell says Mr. Turtle doesn't have a first name, and by Grave stone time it's sydney.
Since this was the featured article and there was no season 2 info i watched almost every season 2 episode looking for tidbits to add in about mr turtle up to 'Buried Treasure'. That much effort put into finding that info id like it to stay up there.--My Name Is Tom 18:10, 11 March 2009 (UTC)