#1 butt exercise to avoid

Ol' Bally the Dog, my crazy Canadian chocolate lab, enjoys sniffing butts. He makes no apologiez. That's what dogs do. I, on the other hand, prefer just to look at them. I'm a bit of a butt expert. Show me a nice butt and I can accurately predict that person's workout routine. And if you show me a flat butt, or one that squishes out sideways or droops down instead of curving back