I trained this model on a bunch of images of anime girls who have dicks for necks that attach to a pussy between their shoulders. It should be okay for dicknecks with disembodied heads, or being held in someone's hands or lap, or bodies by themselves with pussies between their shoulders, or various combinations of other stuff, depending on the IL checkpoint you use. Also trained to insert dicknecks into pussies, but usually more successful at attaching where a head is supposed to go than where a pussy usually is. Can put condoms on, but for some reason they usually turn out pink.

Specific terminology used in training and intended meanings:

dickneck - head with a dick for a neck

collarpussy - pussy on body above collarbone (calling it a neckpussy caused issues)

inserted dickneck - dickneck inside a collarpussy (not reliable for the one between the legs)

disembodied head, head only, headless - about what you'd expect

wearing condom - specifically on dicknecks, but usually does regular dicks too