When Auntie Breeze wants you to play with a tennis ball she doesn't just bark like other dogs might do she tends to give a bit hint by staring at the ball.
Obviously being a Border Collie this come very naturally as BC's are apparently bred to do this to sheep. Not something us English Shepherd's do however.
But if this doesn't work she then starts to use the Auntie Breeze look.
She can keep this up for ages.
And even does it from different parts of the garden as the boss moves about...
It tends to work in the end !