Then I'm not really sure why you have them. [ Man, this is kinda difficult. Granted, Duo is a terrorist and all, but he doesn't like having these hard person to person exchanges. It's awkward and he has zero answers for her, which is even worse so far as he's concerned. ]

Maybe they're just trying to... I don't know. Prank you or something? Prank someone else by giving you their shells?

[ He doesn't know what people do outside of his shrinking group of friends.. yikes. ]

Thankfully they're just shells instead of something dangerous, I guess..