Indulging in anal pleasure with a twist is what truly excites me. The sensation of an intense urge to defecate, coupled with the inability to push it out, creates a unique and exhilarating experience. My backside feels full to the brim, and the pressure building inside is almost unbearable, yet undeniably pleasurable. The struggle to overcome the obstacle adds a thrilling edge to the sexual experience, making it all the more satisfying.