This isn't my problem, but it's my husband's. B'asia (who has a giant crush on her dad) grabs his hands, like many GSDs do to say,
"Hello, I love you - Won't you tell me your name?
Hello, I love you - Let me jump in your game."
DH doesn't like this and would like to know the best way to stop it. Jaia did something similar with me (held my hand), but it wasn't a big deal and it didn't last long. I thought it was kinda sweet.
Most of the time, DH puts some kind of energy into it, whether consciously or not, telling her to stop or absentmindedly pulling away or even petting her.
We are aware that all of these behaviors only encourage it. Also, B'asia is very high-strung and quirky. So this action is F-A-S-T and she's gone. That's the game. To grab his hand and get away before he can even react. And she always wins.
She has NEVER hurt him. Not in the least. And she's always in a fun, happy, "Hi Daddy, Let's play" mode.
Another piece of information. DH plays with Jaia outside and B'asia barks at them the whole time. There is no "game" that B'asia has that is just her and her dad. In fact, I don't know of a game that B'asia likes to play, but she's got a killer herding drive.
B'asia has never done this with me. And she doesn't bark when I play with Jaia. 
Here's what we're thinking of doing. Ignore the behavior and let the hand hang. More B'asia/Daddy time, especially outside and playing a new game that's only for her. (Any suggestions?) Plus, I'm going to put more time into obedience training with B'asia.
So. Does anyone have any input or other ideas for us to use?