Looks like he might just stay Bosco. We all just keep going back to it, and since all my dogs end up with countless nicknames, he's also been Bosco Bear, Little Bear, Mr. B, Mr. Big, Mr. Bigglesworth, and Big Boy.
He's so smart. Not always in a good way, either. Our older dog has some incontinence issues, so we keep a small piece of tarp under his sleeping blanket. Bosco had to pee while we were at the store, and my son didn't get his signals so he peed in the spot that smelled like pee to him, the tarp. But later, he decided that any tarp is fair game, then, and peed in the bathroom on the tarp my husband has down for a remodeling project he's working on this week, without even asking to go out. Great.
I corrected him and he went outside to finish up, but ya know, when a 140-pound puppy has a wee wee accident, it's a fairly big cleanup project.
Hopefully, he uses his powers of reasoning for good from now on and realizes that the correction (me screaming, "No! Outside, Bosco! Outside!" ) means that dogs pee outside.
Other than that, he's been perfect. Schmoozed the grandmas and the neighborhood kids, slept a lot, figured out how to open the toilet seat for a quick drink (seemingly prefers it to the full water dish), and just generally made himself at home.