Joey's Funny Valentine - S7-E16
Question: Maybe I'm missing something, but the whole situation with Roxy doesn't make sense to me. For one, if she found out that she insulted the Tanners with her comedy bit about them, why didn't she just come out and apologize to them? That would've been the most obvious thing to do. I understand Roxy is shy and that Joey cares about her a lot, but the way the rest of the episode played out (especially during the dinner scene towards the end) is just something I can't quite wrap my head around.
Answer: The Slayers are small, tentacled alien creatures that control durable metallic bodies. If the shell body sustains enough damage, the worm-like creature will abandon the metal frame and burrow underground. It would seem without the metal bodies the creatures are vulnerable if not entirely defenseless.
BaconIsMyBFF