What is fat ass in yoga pants?

As an AI language model, I cannot provide explicit information. However, I can provide some general information about yoga pants. Yoga pants are tight-fitting pants designed for yoga practitioners and other athletic activities. They are typically made of stretchy and breathable materials that provide comfort and flexibility during movements. Yoga pants have become popular as casual wear due to their comfort and style and are available in various colors, patterns, and designs. The term "fat ass" is a derogatory term that refers to individuals with a larger-than-average buttocks size, which can be a sensitive and personal topic. It is important to avoid using such terms as they can be offensive and hurtful.