Bound and eager, the submissive slave kneels, eyes on his Mistress. She presents two monstrous dildos, smirking, "Today, we'll see if you can take both up that tight ass." Starting with one, she pushes it in slowly, watching his grimaces. Once it's in, she adds lube, then forces the second in, stretching him wide. He moans, panting, "Yes, Mistress," as she fucks him with both, laughing, "Such a good little slut.