The meat armor one is correct, yeah. 肉鎧 if you want to do a pixiv tag search or something.
They usually use it between evil bipedal fantasy races (eg. orcs, ogres) and captured female elves/heroes/knights etc. The female is strapped to their front.
Even though the orc/ogre tends to be much larger, the hostage's entire body can at least shield their vitals, and make it significantly harder for a good-aligned hero to attack freely, hence the "armor" part. Plus, of course, the whole easy-access fucksleeve thing.