Bringing you to a puppy playdate (or so you think) but when you show up the other dog is soooo much bigger and stronger than you that even sniffing and pawing at you curiously is enough to knock you to the ground. And you're lying there, dazed, as someone flips you onto your stomach, ass up, and calls to the other dog to come over. There's a prodding at your hole, but when you open your mouth to complain, a gag is shoved in there instead. "C'mon buddy, see? We got you a new toy!" A disembodied voice, calling to the dog. You can feel their hands on your back, shoving you down; they're panting loudly in your ear as they try to mount you. "Yeah, you wanna play? Puppy wants to try out its new toy? Good, yeah. Just like that." As they finally slip in, hips erratic as they slam into you. Merciless pace; dumb mutt desperate to finally cum inside a tight warm hole.