Hehehe nope
We always have 3 GSD's. One is about 15 years old female, 2nd one is about 7 years old male and my girl is almost 4 yrs old.
I did intensive training with Vikki, she went to obedience classes and various other classes for 2 years. Now we just play a lot - she has a massive play drive that you need to keep in check. At the moment I cant take her for walks since she really is just to strong for me. I take the male for a daily walk most afternoons and he is fine. She will pull my arms out of my sockets from excitement.
We use loads of cheap toys for Vikki, she has a teddy bear that she carries around, we use old denims to make ropes for tug of war (this dog will do anything for a game of tug of war since it was used as a reward at puppy training for good behaviour or a job well done in stead of treats.) She is relatively calm at home, does get a bit excited but because she has 2 other dogs to play with they keep each other in check.
How old is your GSD?