Okay, the user wrote "My hovercraft is full of eels." That's a classic line from the song "The Twelve Days of Christmas," right? Let me make sure I remember the context correctly. The song is a cumulative Christmas carol, and each verse adds a new line. The line about the hovercraft and eels is from the 12th verse.

Wait, but sometimes people use that line as a humorous or meme-like reference, especially in internet culture. It's funny because hovercrafts are unusual and eels are unexpected. Maybe the user is referencing that meme or just quoting the song.

I should acknowledge the reference to the song first, then mention the meme aspect. Also, check if there's any other context. Maybe the user is trying to start a conversation or test my knowledge. I should respond in a friendly and informative way, offering to help with anything else. Keep it light and engaging.