Illflem, I laughed out loud when I read your post. We have a half lab/half australian sheperd that is the same way. If I yell at it, it crawls under my wife's computer desk and won't come out until I pet him for a bit. Even funnier, if the dog hears me swear when I'm working on my truck or in the garage it does the same thing.
On the other side of life, we have a new lab pup that, if you act mad or stern with, it just plays even harder. Earlier today while on the TDR, I heard a strange crunching noise coming from the kitchen. I knew as I went in there it wasn't going to be pretty. Sure enough, Kirby is laying on the kitchen table consuming the garage door opener. As I said @#$%&* out loud, she brought me the largest piece of the opener and dropped it at my feet as I have been teaching her. Of course, Rocko headed for the computer desk and wouldn't come out for a while.
Dogs, gotta love 'em!