I've tried saying OUCH really loud. I've TRIED to get him to listen to "Leave it" "No Bite"... etc... My arms look like I've been trying to play with pirhanas... Just now my son was out here sitting on the couch with me and Midnight jumped up at my face and cut my cheek. I know he wasn't being malicious, but it REALLY hurt!!! He is 11 weeks today....
OMG, this could be Tess your talking about, Tess is 11 weeks old and she is biting me and my husband all the time. She also bit me in the face! I was playing ball with her and when the ball went under the television stand, I bent down to pick it up and she jumped up and bit me in the face, it really hurt too. Her teeth are so sharp, it's agony every time she bites me. We are now working on "The Bite Stops Here", with a little progress for a day or two and then it's back to biting again. It's two steps forward and then one step back but we plan on continuing along this line to try to stop her biting. I yell ouch and I leave the room very quickly because if I don't, she bites the back of my heels which is extremely painful. I spend a few minutes in my bedroom with the door closed (practically in tears) and when I come out, she has calmed down a little, not a lot, but I'll take whatever I can get.
She doesn't like to walk very far on a leash either, just like Midnight, and just as you described him tugging all the way back home; Tess does exactly the same thing. I practically have to run to keep up with her and I worry that she's going to collapse in her rush to get there. As soon as she gets to the yard, she calms down a bit. Today, I actually had her out walking around the block, which pleased me immensely because she fell asleep as soon as we got in the door. It was most likely due to her running all the way home.
With Tess, the mornings and the early evenings are the worse, she is so full of energy and she bites constantly. She starts beginner training on Wednesday evening, I can't wait. She was supposed to start last week but there was a Nor'easter, so it was cancelled. I don't have much advice for you but wanted to share my experience due to it being so similar to yours. It's actually a little comforting to know that it's not just Tess and there are other puppies out there doing exactly the same thing. Gives me a little more hope that it will pass, eventually.