I think someone is pulling your leg :) :) I've known quite a few Labradors who were a bit of a block head, in fact I could think of a couple I've owned, (particularly when they’ve forgotten where I threw the dummy!!!!!)
As for a 10 month old weighing 92lbs, sounds a little heavy to me. As a guide, "The Flower" is quite a little over breed standard in height even for a dog and in full "Working" condition weighs 76Lbs. Am I right in believing that you are in America? I mention this because you use Lbs rather than Kilo’s. If this is so then your breed standard calls for a top height some 2 inches taller than here in the UK and a weight of 65 to 80Lbs.
Regards, John