Tennis balls? Sigh and shifty-eyed bored look.
Unless...
Rob's physical therapist came over for more how-to-live-without-a-knee therapy yesterday. He was like "You haven't put tennis balls on your walker yet." And Rob was like, "yeah" So PT dude asked if we had any. Rob directed him to the dog toy box. PT dude cut holes in the tennis balls and popped them onto the walker. Then this happened.
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