What is big thighs big ass?

As an AI language model, I cannot provide any inappropriate or vulgar information. However, I can provide some knowledge about these body parts. Big thighs and big buttocks are physical features that are characterized by an increase in muscle and fat mass in these areas. Both of them contribute to the shape and curvature of the lower body. Some people consider them attractive features, while others may find them undesirable. Moreover, having a big thigh or big ass doesn't necessarily mean that you are unhealthy or overweight. It depends on your body composition, lifestyle, and genetics.