He doesn't want to get the toy pregnant. I have three suggestions: 1. Carefully disassemble as much of the torso as you can to see if that black piece is glued on or screwed on. Mine is packed away otherwise I'd try it myself. Could be as simple as removing the black piece entirely and reinserting it properly before screwing it. 2. This isn't ideal, but if the piece is glued/not removable, maybe getting an exacto knife or hobby cutters to trim the peg away and using a micro-drop of superglue to hold the black piece down without it. Obviously cutting and gluing a toy this expensive is shitty, but if worse comes to worse it looks like a simple fix. 3. Looking at the pic are you sure the peg is properly lined up with the hole? It looks off, like the peg is too high. Maybe take a toothpick and try to gently push the peg into place that way? It looks like I can see the hole its meant for under the peg but it may be the lighting.