I thought that's probably what "kidney bean" meant but wasn't for sure. My family calls her the "sausage dog" when she does that.
The other day I was picking Kawi up from the vet's office and there was a man standing at the counter ready to pay. Well as you boxer loves know, when they get excited they SLOBBER! Well, she was so excited to see her mommy that she was foaming and started shaking her head & the man got very annoyed at her! I told him that was a "boxer trait" but unlike us, he didn't find it as precious as we do.