The Kidney Bean Dance

Sam has this dance. We call it the "kidney bean dance"...it goes like this.

We come home or a visitor comes over.
He goes and finds a toy or something else he can put in his mouth.
He proudly brings it to you.
He shakes his entire back end (nub and butt) to the point where he nearly falls down.
He then runs in cirlces, bucking like a bronco and snorting 'cause of the item in his mouth.
(repeat steps above)