So, my spouse comes home wearing a small cooler as well as a work bag, and sometimes more bags from groceries or projects aquired in the wild, makes a beeline for me and we kiss and talk; whenever they're all stockpiled I stress about their body under the weight. Your dad loves your spine, dude. Just say you're on your way to put it down, but wanted to give a brief greeting because you're so tired. I think you humans call this "just saying hi real quick, too tired to talk."