Q: What is a Barnacle?
A: It's a mythical creature that's 90% octopus, 10% disappointment. We're not really sure.
Q: Why do Barnacles have such poor personal hygiene?
A: Because they're allergic to soap. Don't ask.
Q: Can I have a Barnacle as a pet?
A: Only if you're willing to deal with the existential dread of watching it slowly realize it's trapped in your house.