[Caption needed] The Pacifier technique (Pixiv Fanbox)

Hi y'all! Here's another pic needing your creative input! This one I already have idea on it tho, so maybe your caption can be something according to this idea? This pic is our return to owner/training guide (i'm mixing em lol) It's Lilly and her owner doing something called "The pacifier technic" It's pretty simple. the pet is trained to keep lightly suckle on the owner's D all night. The petsitter is programmed to give her a jolt when she stops sucking. So we are hoping to eventually have her doing this light BJ in her sleep ;) I will write a detailed caption later (or use one of yours if i can't do better ^^" ) I want to post it on Friday's evening if possible. So thank you in advance and have fun y'all!