Suho would maybe pout a little but he did lose the bet so he wouldn’t put up a fight since he seems like someone who sticks to their word. He’d comply with everything you’d ask him to do to the best of his ability. He’d chuckle a little from embarrassment after everything he did though. All in all, he’d be a prim and proper “pet”. You’d actually find it pretty endearing that he was willing to do it without complaining.